workspace.rs

   1pub mod dock;
   2pub mod item;
   3mod modal_layer;
   4pub mod notifications;
   5pub mod pane;
   6pub mod pane_group;
   7mod persistence;
   8pub mod searchable;
   9pub mod shared_screen;
  10mod status_bar;
  11pub mod tasks;
  12mod theme_preview;
  13mod toast_layer;
  14mod toolbar;
  15mod workspace_settings;
  16
  17pub use toast_layer::{RunAction, ToastAction, ToastLayer, ToastView};
  18
  19use anyhow::{anyhow, Context as _, Result};
  20use call::{call_settings::CallSettings, ActiveCall};
  21use client::{
  22    proto::{self, ErrorCode, PanelId, PeerId},
  23    ChannelId, Client, ErrorExt, Status, TypedEnvelope, UserStore,
  24};
  25use collections::{hash_map, HashMap, HashSet};
  26use derive_more::{Deref, DerefMut};
  27pub use dock::Panel;
  28use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
  29use futures::{
  30    channel::{
  31        mpsc::{self, UnboundedReceiver, UnboundedSender},
  32        oneshot,
  33    },
  34    future::try_join_all,
  35    Future, FutureExt, StreamExt,
  36};
  37use gpui::{
  38    action_as, actions, canvas, impl_action_as, impl_actions, point, relative, size,
  39    transparent_black, Action, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Bounds,
  40    Context, CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
  41    Focusable, Global, Hsla, KeyContext, Keystroke, ManagedView, MouseButton, PathPromptOptions,
  42    Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription, Task, Tiling, WeakEntity,
  43    WindowBounds, WindowHandle, WindowId, WindowOptions,
  44};
  45pub use item::{
  46    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
  47    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
  48};
  49use itertools::Itertools;
  50use language::{LanguageRegistry, Rope};
  51pub use modal_layer::*;
  52use node_runtime::NodeRuntime;
  53use notifications::{
  54    simple_message_notification::MessageNotification, DetachAndPromptErr, Notifications,
  55};
  56pub use pane::*;
  57pub use pane_group::*;
  58pub use persistence::{
  59    model::{ItemId, LocalPaths, SerializedWorkspaceLocation},
  60    WorkspaceDb, DB as WORKSPACE_DB,
  61};
  62use persistence::{
  63    model::{SerializedSshProject, SerializedWorkspace},
  64    SerializedWindowBounds, DB,
  65};
  66use postage::stream::Stream;
  67use project::{
  68    DirectoryLister, Project, ProjectEntryId, ProjectPath, ResolvedPath, Worktree, WorktreeId,
  69};
  70use remote::{ssh_session::ConnectionIdentifier, SshClientDelegate, SshConnectionOptions};
  71use schemars::JsonSchema;
  72use serde::Deserialize;
  73use session::AppSession;
  74use settings::Settings;
  75use shared_screen::SharedScreen;
  76use sqlez::{
  77    bindable::{Bind, Column, StaticColumnCount},
  78    statement::Statement,
  79};
  80use status_bar::StatusBar;
  81pub use status_bar::StatusItemView;
  82use std::{
  83    any::TypeId,
  84    borrow::Cow,
  85    cell::RefCell,
  86    cmp,
  87    collections::hash_map::DefaultHasher,
  88    env,
  89    hash::{Hash, Hasher},
  90    path::{Path, PathBuf},
  91    rc::Rc,
  92    sync::{atomic::AtomicUsize, Arc, LazyLock, Weak},
  93    time::Duration,
  94};
  95use task::SpawnInTerminal;
  96use theme::{ActiveTheme, SystemAppearance, ThemeSettings};
  97pub use toolbar::{Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView};
  98pub use ui;
  99use ui::prelude::*;
 100use util::{paths::SanitizedPath, serde::default_true, ResultExt, TryFutureExt};
 101use uuid::Uuid;
 102pub use workspace_settings::{
 103    AutosaveSetting, RestoreOnStartupBehavior, TabBarSettings, WorkspaceSettings,
 104};
 105
 106use crate::notifications::NotificationId;
 107use crate::persistence::{
 108    model::{DockData, DockStructure, SerializedItem, SerializedPane, SerializedPaneGroup},
 109    SerializedAxis,
 110};
 111
 112pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
 113
 114static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
 115    env::var("ZED_WINDOW_SIZE")
 116        .ok()
 117        .as_deref()
 118        .and_then(parse_pixel_size_env_var)
 119});
 120
 121static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
 122    env::var("ZED_WINDOW_POSITION")
 123        .ok()
 124        .as_deref()
 125        .and_then(parse_pixel_position_env_var)
 126});
 127
 128actions!(assistant, [ShowConfiguration]);
 129
 130actions!(
 131    workspace,
 132    [
 133        ActivateNextPane,
 134        ActivatePreviousPane,
 135        ActivateNextWindow,
 136        ActivatePreviousWindow,
 137        AddFolderToProject,
 138        ClearAllNotifications,
 139        CloseAllDocks,
 140        CloseWindow,
 141        Feedback,
 142        FollowNextCollaborator,
 143        MoveFocusedPanelToNextPosition,
 144        NewCenterTerminal,
 145        NewFile,
 146        NewFileSplitVertical,
 147        NewFileSplitHorizontal,
 148        NewSearch,
 149        NewTerminal,
 150        NewWindow,
 151        Open,
 152        OpenFiles,
 153        OpenInTerminal,
 154        OpenComponentPreview,
 155        ReloadActiveItem,
 156        SaveAs,
 157        SaveWithoutFormat,
 158        ToggleBottomDock,
 159        ToggleCenteredLayout,
 160        ToggleLeftDock,
 161        ToggleRightDock,
 162        ToggleZoom,
 163        Unfollow,
 164        Welcome,
 165    ]
 166);
 167
 168#[derive(Clone, PartialEq)]
 169pub struct OpenPaths {
 170    pub paths: Vec<PathBuf>,
 171}
 172
 173#[derive(Clone, Deserialize, PartialEq, JsonSchema)]
 174pub struct ActivatePane(pub usize);
 175
 176#[derive(Clone, Deserialize, PartialEq, JsonSchema)]
 177#[serde(deny_unknown_fields)]
 178pub struct MoveItemToPane {
 179    pub destination: usize,
 180    #[serde(default = "default_true")]
 181    pub focus: bool,
 182}
 183
 184#[derive(Clone, Deserialize, PartialEq, JsonSchema)]
 185#[serde(deny_unknown_fields)]
 186pub struct MoveItemToPaneInDirection {
 187    pub direction: SplitDirection,
 188    #[serde(default = "default_true")]
 189    pub focus: bool,
 190}
 191
 192#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema)]
 193#[serde(deny_unknown_fields)]
 194pub struct SaveAll {
 195    pub save_intent: Option<SaveIntent>,
 196}
 197
 198#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema)]
 199#[serde(deny_unknown_fields)]
 200pub struct Save {
 201    pub save_intent: Option<SaveIntent>,
 202}
 203
 204#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema)]
 205#[serde(deny_unknown_fields)]
 206pub struct CloseAllItemsAndPanes {
 207    pub save_intent: Option<SaveIntent>,
 208}
 209
 210#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema)]
 211#[serde(deny_unknown_fields)]
 212pub struct CloseInactiveTabsAndPanes {
 213    pub save_intent: Option<SaveIntent>,
 214}
 215
 216#[derive(Clone, Deserialize, PartialEq, JsonSchema)]
 217pub struct SendKeystrokes(pub String);
 218
 219#[derive(Clone, Deserialize, PartialEq, Default, JsonSchema)]
 220#[serde(deny_unknown_fields)]
 221pub struct Reload {
 222    pub binary_path: Option<PathBuf>,
 223}
 224
 225action_as!(project_symbols, ToggleProjectSymbols as Toggle);
 226
 227#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema)]
 228pub struct ToggleFileFinder {
 229    #[serde(default)]
 230    pub separate_history: bool,
 231}
 232
 233impl_action_as!(file_finder, ToggleFileFinder as Toggle);
 234
 235impl_actions!(
 236    workspace,
 237    [
 238        ActivatePane,
 239        CloseAllItemsAndPanes,
 240        CloseInactiveTabsAndPanes,
 241        MoveItemToPane,
 242        MoveItemToPaneInDirection,
 243        OpenTerminal,
 244        Reload,
 245        Save,
 246        SaveAll,
 247        SendKeystrokes,
 248    ]
 249);
 250
 251actions!(
 252    workspace,
 253    [
 254        ActivatePaneLeft,
 255        ActivatePaneRight,
 256        ActivatePaneUp,
 257        ActivatePaneDown,
 258        SwapPaneLeft,
 259        SwapPaneRight,
 260        SwapPaneUp,
 261        SwapPaneDown,
 262    ]
 263);
 264
 265#[derive(PartialEq, Eq, Debug)]
 266pub enum CloseIntent {
 267    /// Quit the program entirely.
 268    Quit,
 269    /// Close a window.
 270    CloseWindow,
 271    /// Replace the workspace in an existing window.
 272    ReplaceWindow,
 273}
 274
 275#[derive(Clone)]
 276pub struct Toast {
 277    id: NotificationId,
 278    msg: Cow<'static, str>,
 279    autohide: bool,
 280    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
 281}
 282
 283impl Toast {
 284    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
 285        Toast {
 286            id,
 287            msg: msg.into(),
 288            on_click: None,
 289            autohide: false,
 290        }
 291    }
 292
 293    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
 294    where
 295        M: Into<Cow<'static, str>>,
 296        F: Fn(&mut Window, &mut App) + 'static,
 297    {
 298        self.on_click = Some((message.into(), Arc::new(on_click)));
 299        self
 300    }
 301
 302    pub fn autohide(mut self) -> Self {
 303        self.autohide = true;
 304        self
 305    }
 306}
 307
 308impl PartialEq for Toast {
 309    fn eq(&self, other: &Self) -> bool {
 310        self.id == other.id
 311            && self.msg == other.msg
 312            && self.on_click.is_some() == other.on_click.is_some()
 313    }
 314}
 315
 316#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema)]
 317#[serde(deny_unknown_fields)]
 318pub struct OpenTerminal {
 319    pub working_directory: PathBuf,
 320}
 321
 322#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
 323pub struct WorkspaceId(i64);
 324
 325impl StaticColumnCount for WorkspaceId {}
 326impl Bind for WorkspaceId {
 327    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
 328        self.0.bind(statement, start_index)
 329    }
 330}
 331impl Column for WorkspaceId {
 332    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
 333        i64::column(statement, start_index)
 334            .map(|(i, next_index)| (Self(i), next_index))
 335            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
 336    }
 337}
 338impl From<WorkspaceId> for i64 {
 339    fn from(val: WorkspaceId) -> Self {
 340        val.0
 341    }
 342}
 343
 344pub fn init_settings(cx: &mut App) {
 345    WorkspaceSettings::register(cx);
 346    ItemSettings::register(cx);
 347    PreviewTabsSettings::register(cx);
 348    TabBarSettings::register(cx);
 349}
 350
 351fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
 352    let paths = cx.prompt_for_paths(options);
 353    cx.spawn(|cx| async move {
 354        match paths.await.anyhow().and_then(|res| res) {
 355            Ok(Some(paths)) => {
 356                cx.update(|cx| {
 357                    open_paths(&paths, app_state, OpenOptions::default(), cx).detach_and_log_err(cx)
 358                })
 359                .ok();
 360            }
 361            Ok(None) => {}
 362            Err(err) => {
 363                util::log_err(&err);
 364                cx.update(|cx| {
 365                    if let Some(workspace_window) = cx
 366                        .active_window()
 367                        .and_then(|window| window.downcast::<Workspace>())
 368                    {
 369                        workspace_window
 370                            .update(cx, |workspace, _, cx| {
 371                                workspace.show_portal_error(err.to_string(), cx);
 372                            })
 373                            .ok();
 374                    }
 375                })
 376                .ok();
 377            }
 378        }
 379    })
 380    .detach();
 381}
 382
 383pub fn init(app_state: Arc<AppState>, cx: &mut App) {
 384    init_settings(cx);
 385    component::init();
 386    theme_preview::init(cx);
 387    toast_layer::init(cx);
 388
 389    cx.on_action(Workspace::close_global);
 390    cx.on_action(reload);
 391
 392    cx.on_action({
 393        let app_state = Arc::downgrade(&app_state);
 394        move |_: &Open, cx: &mut App| {
 395            if let Some(app_state) = app_state.upgrade() {
 396                prompt_and_open_paths(
 397                    app_state,
 398                    PathPromptOptions {
 399                        files: true,
 400                        directories: true,
 401                        multiple: true,
 402                    },
 403                    cx,
 404                );
 405            }
 406        }
 407    });
 408    cx.on_action({
 409        let app_state = Arc::downgrade(&app_state);
 410        move |_: &OpenFiles, cx: &mut App| {
 411            let directories = cx.can_select_mixed_files_and_dirs();
 412            if let Some(app_state) = app_state.upgrade() {
 413                prompt_and_open_paths(
 414                    app_state,
 415                    PathPromptOptions {
 416                        files: true,
 417                        directories,
 418                        multiple: true,
 419                    },
 420                    cx,
 421                );
 422            }
 423        }
 424    });
 425}
 426
 427#[derive(Clone, Default, Deref, DerefMut)]
 428struct ProjectItemOpeners(Vec<ProjectItemOpener>);
 429
 430type ProjectItemOpener = fn(
 431    &Entity<Project>,
 432    &ProjectPath,
 433    &mut Window,
 434    &mut App,
 435)
 436    -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
 437
 438type WorkspaceItemBuilder = Box<dyn FnOnce(&mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
 439
 440impl Global for ProjectItemOpeners {}
 441
 442/// Registers a [ProjectItem] for the app. When opening a file, all the registered
 443/// items will get a chance to open the file, starting from the project item that
 444/// was added last.
 445pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
 446    let builders = cx.default_global::<ProjectItemOpeners>();
 447    builders.push(|project, project_path, window, cx| {
 448        let project_item = <I::Item as project::ProjectItem>::try_open(project, project_path, cx)?;
 449        let project = project.clone();
 450        Some(window.spawn(cx, |cx| async move {
 451            let project_item = project_item.await?;
 452            let project_entry_id: Option<ProjectEntryId> =
 453                project_item.read_with(&cx, project::ProjectItem::entry_id)?;
 454            let build_workspace_item = Box::new(|window: &mut Window, cx: &mut Context<Pane>| {
 455                Box::new(cx.new(|cx| I::for_project_item(project, project_item, window, cx)))
 456                    as Box<dyn ItemHandle>
 457            }) as Box<_>;
 458            Ok((project_entry_id, build_workspace_item))
 459        }))
 460    });
 461}
 462
 463#[derive(Default)]
 464pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
 465
 466struct FollowableViewDescriptor {
 467    from_state_proto: fn(
 468        Entity<Workspace>,
 469        ViewId,
 470        &mut Option<proto::view::Variant>,
 471        &mut Window,
 472        &mut App,
 473    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
 474    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
 475}
 476
 477impl Global for FollowableViewRegistry {}
 478
 479impl FollowableViewRegistry {
 480    pub fn register<I: FollowableItem>(cx: &mut App) {
 481        cx.default_global::<Self>().0.insert(
 482            TypeId::of::<I>(),
 483            FollowableViewDescriptor {
 484                from_state_proto: |workspace, id, state, window, cx| {
 485                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
 486                        cx.foreground_executor()
 487                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
 488                    })
 489                },
 490                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
 491            },
 492        );
 493    }
 494
 495    pub fn from_state_proto(
 496        workspace: Entity<Workspace>,
 497        view_id: ViewId,
 498        mut state: Option<proto::view::Variant>,
 499        window: &mut Window,
 500        cx: &mut App,
 501    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
 502        cx.update_default_global(|this: &mut Self, cx| {
 503            this.0.values().find_map(|descriptor| {
 504                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
 505            })
 506        })
 507    }
 508
 509    pub fn to_followable_view(
 510        view: impl Into<AnyView>,
 511        cx: &App,
 512    ) -> Option<Box<dyn FollowableItemHandle>> {
 513        let this = cx.try_global::<Self>()?;
 514        let view = view.into();
 515        let descriptor = this.0.get(&view.entity_type())?;
 516        Some((descriptor.to_followable_view)(&view))
 517    }
 518}
 519
 520#[derive(Copy, Clone)]
 521struct SerializableItemDescriptor {
 522    deserialize: fn(
 523        Entity<Project>,
 524        WeakEntity<Workspace>,
 525        WorkspaceId,
 526        ItemId,
 527        &mut Window,
 528        &mut Context<Pane>,
 529    ) -> Task<Result<Box<dyn ItemHandle>>>,
 530    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
 531    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
 532}
 533
 534#[derive(Default)]
 535struct SerializableItemRegistry {
 536    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
 537    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
 538}
 539
 540impl Global for SerializableItemRegistry {}
 541
 542impl SerializableItemRegistry {
 543    fn deserialize(
 544        item_kind: &str,
 545        project: Entity<Project>,
 546        workspace: WeakEntity<Workspace>,
 547        workspace_id: WorkspaceId,
 548        item_item: ItemId,
 549        window: &mut Window,
 550        cx: &mut Context<Pane>,
 551    ) -> Task<Result<Box<dyn ItemHandle>>> {
 552        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
 553            return Task::ready(Err(anyhow!(
 554                "cannot deserialize {}, descriptor not found",
 555                item_kind
 556            )));
 557        };
 558
 559        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
 560    }
 561
 562    fn cleanup(
 563        item_kind: &str,
 564        workspace_id: WorkspaceId,
 565        loaded_items: Vec<ItemId>,
 566        window: &mut Window,
 567        cx: &mut App,
 568    ) -> Task<Result<()>> {
 569        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
 570            return Task::ready(Err(anyhow!(
 571                "cannot cleanup {}, descriptor not found",
 572                item_kind
 573            )));
 574        };
 575
 576        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
 577    }
 578
 579    fn view_to_serializable_item_handle(
 580        view: AnyView,
 581        cx: &App,
 582    ) -> Option<Box<dyn SerializableItemHandle>> {
 583        let this = cx.try_global::<Self>()?;
 584        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
 585        Some((descriptor.view_to_serializable_item)(view))
 586    }
 587
 588    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
 589        let this = cx.try_global::<Self>()?;
 590        this.descriptors_by_kind.get(item_kind).copied()
 591    }
 592}
 593
 594pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
 595    let serialized_item_kind = I::serialized_item_kind();
 596
 597    let registry = cx.default_global::<SerializableItemRegistry>();
 598    let descriptor = SerializableItemDescriptor {
 599        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
 600            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
 601            cx.foreground_executor()
 602                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
 603        },
 604        cleanup: |workspace_id, loaded_items, window, cx| {
 605            I::cleanup(workspace_id, loaded_items, window, cx)
 606        },
 607        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
 608    };
 609    registry
 610        .descriptors_by_kind
 611        .insert(Arc::from(serialized_item_kind), descriptor);
 612    registry
 613        .descriptors_by_type
 614        .insert(TypeId::of::<I>(), descriptor);
 615}
 616
 617pub struct AppState {
 618    pub languages: Arc<LanguageRegistry>,
 619    pub client: Arc<Client>,
 620    pub user_store: Entity<UserStore>,
 621    pub workspace_store: Entity<WorkspaceStore>,
 622    pub fs: Arc<dyn fs::Fs>,
 623    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
 624    pub node_runtime: NodeRuntime,
 625    pub session: Entity<AppSession>,
 626}
 627
 628struct GlobalAppState(Weak<AppState>);
 629
 630impl Global for GlobalAppState {}
 631
 632pub struct WorkspaceStore {
 633    workspaces: HashSet<WindowHandle<Workspace>>,
 634    client: Arc<Client>,
 635    _subscriptions: Vec<client::Subscription>,
 636}
 637
 638#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
 639struct Follower {
 640    project_id: Option<u64>,
 641    peer_id: PeerId,
 642}
 643
 644impl AppState {
 645    #[track_caller]
 646    pub fn global(cx: &App) -> Weak<Self> {
 647        cx.global::<GlobalAppState>().0.clone()
 648    }
 649    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
 650        cx.try_global::<GlobalAppState>()
 651            .map(|state| state.0.clone())
 652    }
 653    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
 654        cx.set_global(GlobalAppState(state));
 655    }
 656
 657    #[cfg(any(test, feature = "test-support"))]
 658    pub fn test(cx: &mut App) -> Arc<Self> {
 659        use node_runtime::NodeRuntime;
 660        use session::Session;
 661        use settings::SettingsStore;
 662
 663        if !cx.has_global::<SettingsStore>() {
 664            let settings_store = SettingsStore::test(cx);
 665            cx.set_global(settings_store);
 666        }
 667
 668        let fs = fs::FakeFs::new(cx.background_executor().clone());
 669        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
 670        let clock = Arc::new(clock::FakeSystemClock::new());
 671        let http_client = http_client::FakeHttpClient::with_404_response();
 672        let client = Client::new(clock, http_client.clone(), cx);
 673        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 674        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
 675        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 676
 677        theme::init(theme::LoadThemes::JustBase, cx);
 678        client::init(&client, cx);
 679        crate::init_settings(cx);
 680
 681        Arc::new(Self {
 682            client,
 683            fs,
 684            languages,
 685            user_store,
 686            workspace_store,
 687            node_runtime: NodeRuntime::unavailable(),
 688            build_window_options: |_, _| Default::default(),
 689            session,
 690        })
 691    }
 692}
 693
 694struct DelayedDebouncedEditAction {
 695    task: Option<Task<()>>,
 696    cancel_channel: Option<oneshot::Sender<()>>,
 697}
 698
 699impl DelayedDebouncedEditAction {
 700    fn new() -> DelayedDebouncedEditAction {
 701        DelayedDebouncedEditAction {
 702            task: None,
 703            cancel_channel: None,
 704        }
 705    }
 706
 707    fn fire_new<F>(
 708        &mut self,
 709        delay: Duration,
 710        window: &mut Window,
 711        cx: &mut Context<Workspace>,
 712        func: F,
 713    ) where
 714        F: 'static
 715            + Send
 716            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
 717    {
 718        if let Some(channel) = self.cancel_channel.take() {
 719            _ = channel.send(());
 720        }
 721
 722        let (sender, mut receiver) = oneshot::channel::<()>();
 723        self.cancel_channel = Some(sender);
 724
 725        let previous_task = self.task.take();
 726        self.task = Some(cx.spawn_in(window, move |workspace, mut cx| async move {
 727            let mut timer = cx.background_executor().timer(delay).fuse();
 728            if let Some(previous_task) = previous_task {
 729                previous_task.await;
 730            }
 731
 732            futures::select_biased! {
 733                _ = receiver => return,
 734                    _ = timer => {}
 735            }
 736
 737            if let Some(result) = workspace
 738                .update_in(&mut cx, |workspace, window, cx| {
 739                    (func)(workspace, window, cx)
 740                })
 741                .log_err()
 742            {
 743                result.await.log_err();
 744            }
 745        }));
 746    }
 747}
 748
 749pub enum Event {
 750    PaneAdded(Entity<Pane>),
 751    PaneRemoved,
 752    ItemAdded {
 753        item: Box<dyn ItemHandle>,
 754    },
 755    ItemRemoved,
 756    ActiveItemChanged,
 757    UserSavedItem {
 758        pane: WeakEntity<Pane>,
 759        item: Box<dyn WeakItemHandle>,
 760        save_intent: SaveIntent,
 761    },
 762    ContactRequestedJoin(u64),
 763    WorkspaceCreated(WeakEntity<Workspace>),
 764    SpawnTask {
 765        action: Box<SpawnInTerminal>,
 766    },
 767    OpenBundledFile {
 768        text: Cow<'static, str>,
 769        title: &'static str,
 770        language: &'static str,
 771    },
 772    ZoomChanged,
 773}
 774
 775#[derive(Debug)]
 776pub enum OpenVisible {
 777    All,
 778    None,
 779    OnlyFiles,
 780    OnlyDirectories,
 781}
 782
 783type PromptForNewPath = Box<
 784    dyn Fn(
 785        &mut Workspace,
 786        &mut Window,
 787        &mut Context<Workspace>,
 788    ) -> oneshot::Receiver<Option<ProjectPath>>,
 789>;
 790
 791type PromptForOpenPath = Box<
 792    dyn Fn(
 793        &mut Workspace,
 794        DirectoryLister,
 795        &mut Window,
 796        &mut Context<Workspace>,
 797    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 798>;
 799
 800/// Collects everything project-related for a certain window opened.
 801/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 802///
 803/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 804/// The `Workspace` owns everybody's state and serves as a default, "global context",
 805/// that can be used to register a global action to be triggered from any place in the window.
 806pub struct Workspace {
 807    weak_self: WeakEntity<Self>,
 808    workspace_actions: Vec<Box<dyn Fn(Div, &mut Window, &mut Context<Self>) -> Div>>,
 809    zoomed: Option<AnyWeakView>,
 810    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 811    zoomed_position: Option<DockPosition>,
 812    center: PaneGroup,
 813    left_dock: Entity<Dock>,
 814    bottom_dock: Entity<Dock>,
 815    right_dock: Entity<Dock>,
 816    panes: Vec<Entity<Pane>>,
 817    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 818    active_pane: Entity<Pane>,
 819    last_active_center_pane: Option<WeakEntity<Pane>>,
 820    last_active_view_id: Option<proto::ViewId>,
 821    status_bar: Entity<StatusBar>,
 822    modal_layer: Entity<ModalLayer>,
 823    toast_layer: Entity<ToastLayer>,
 824    titlebar_item: Option<AnyView>,
 825    notifications: Notifications,
 826    project: Entity<Project>,
 827    follower_states: HashMap<PeerId, FollowerState>,
 828    last_leaders_by_pane: HashMap<WeakEntity<Pane>, PeerId>,
 829    window_edited: bool,
 830    dirty_items: HashMap<EntityId, Subscription>,
 831    active_call: Option<(Entity<ActiveCall>, Vec<Subscription>)>,
 832    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 833    database_id: Option<WorkspaceId>,
 834    app_state: Arc<AppState>,
 835    dispatching_keystrokes: Rc<RefCell<(HashSet<String>, Vec<Keystroke>)>>,
 836    _subscriptions: Vec<Subscription>,
 837    _apply_leader_updates: Task<Result<()>>,
 838    _observe_current_user: Task<Result<()>>,
 839    _schedule_serialize: Option<Task<()>>,
 840    pane_history_timestamp: Arc<AtomicUsize>,
 841    bounds: Bounds<Pixels>,
 842    centered_layout: bool,
 843    bounds_save_task_queued: Option<Task<()>>,
 844    on_prompt_for_new_path: Option<PromptForNewPath>,
 845    on_prompt_for_open_path: Option<PromptForOpenPath>,
 846    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 847    serialized_ssh_project: Option<SerializedSshProject>,
 848    _items_serializer: Task<Result<()>>,
 849    session_id: Option<String>,
 850}
 851
 852impl EventEmitter<Event> for Workspace {}
 853
 854#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 855pub struct ViewId {
 856    pub creator: PeerId,
 857    pub id: u64,
 858}
 859
 860pub struct FollowerState {
 861    center_pane: Entity<Pane>,
 862    dock_pane: Option<Entity<Pane>>,
 863    active_view_id: Option<ViewId>,
 864    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 865}
 866
 867struct FollowerView {
 868    view: Box<dyn FollowableItemHandle>,
 869    location: Option<proto::PanelId>,
 870}
 871
 872impl Workspace {
 873    const DEFAULT_PADDING: f32 = 0.2;
 874    const MAX_PADDING: f32 = 0.4;
 875
 876    pub fn new(
 877        workspace_id: Option<WorkspaceId>,
 878        project: Entity<Project>,
 879        app_state: Arc<AppState>,
 880        window: &mut Window,
 881        cx: &mut Context<Self>,
 882    ) -> Self {
 883        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 884            match event {
 885                project::Event::RemoteIdChanged(_) => {
 886                    this.update_window_title(window, cx);
 887                }
 888
 889                project::Event::CollaboratorLeft(peer_id) => {
 890                    this.collaborator_left(*peer_id, window, cx);
 891                }
 892
 893                project::Event::WorktreeRemoved(_) | project::Event::WorktreeAdded(_) => {
 894                    this.update_window_title(window, cx);
 895                    this.serialize_workspace(window, cx);
 896                }
 897
 898                project::Event::DisconnectedFromHost => {
 899                    this.update_window_edited(window, cx);
 900                    let leaders_to_unfollow =
 901                        this.follower_states.keys().copied().collect::<Vec<_>>();
 902                    for leader_id in leaders_to_unfollow {
 903                        this.unfollow(leader_id, window, cx);
 904                    }
 905                }
 906
 907                project::Event::DisconnectedFromSshRemote => {
 908                    this.update_window_edited(window, cx);
 909                }
 910
 911                project::Event::Closed => {
 912                    window.remove_window();
 913                }
 914
 915                project::Event::DeletedEntry(_, entry_id) => {
 916                    for pane in this.panes.iter() {
 917                        pane.update(cx, |pane, cx| {
 918                            pane.handle_deleted_project_item(*entry_id, window, cx)
 919                        });
 920                    }
 921                }
 922
 923                project::Event::Toast {
 924                    notification_id,
 925                    message,
 926                } => this.show_notification(
 927                    NotificationId::named(notification_id.clone()),
 928                    cx,
 929                    |cx| cx.new(|cx| MessageNotification::new(message.clone(), cx)),
 930                ),
 931
 932                project::Event::HideToast { notification_id } => {
 933                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 934                }
 935
 936                project::Event::LanguageServerPrompt(request) => {
 937                    struct LanguageServerPrompt;
 938
 939                    let mut hasher = DefaultHasher::new();
 940                    request.lsp_name.as_str().hash(&mut hasher);
 941                    let id = hasher.finish();
 942
 943                    this.show_notification(
 944                        NotificationId::composite::<LanguageServerPrompt>(id as usize),
 945                        cx,
 946                        |cx| {
 947                            cx.new(|cx| {
 948                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 949                            })
 950                        },
 951                    );
 952                }
 953
 954                _ => {}
 955            }
 956            cx.notify()
 957        })
 958        .detach();
 959
 960        cx.on_focus_lost(window, |this, window, cx| {
 961            let focus_handle = this.focus_handle(cx);
 962            window.focus(&focus_handle);
 963        })
 964        .detach();
 965
 966        let weak_handle = cx.entity().downgrade();
 967        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 968
 969        let center_pane = cx.new(|cx| {
 970            let mut center_pane = Pane::new(
 971                weak_handle.clone(),
 972                project.clone(),
 973                pane_history_timestamp.clone(),
 974                None,
 975                NewFile.boxed_clone(),
 976                window,
 977                cx,
 978            );
 979            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 980            center_pane
 981        });
 982        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 983            .detach();
 984
 985        window.focus(&center_pane.focus_handle(cx));
 986
 987        cx.emit(Event::PaneAdded(center_pane.clone()));
 988
 989        let window_handle = window.window_handle().downcast::<Workspace>().unwrap();
 990        app_state.workspace_store.update(cx, |store, _| {
 991            store.workspaces.insert(window_handle);
 992        });
 993
 994        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 995        let mut connection_status = app_state.client.status();
 996        let _observe_current_user = cx.spawn_in(window, |this, mut cx| async move {
 997            current_user.next().await;
 998            connection_status.next().await;
 999            let mut stream =
1000                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
1001
1002            while stream.recv().await.is_some() {
1003                this.update(&mut cx, |_, cx| cx.notify())?;
1004            }
1005            anyhow::Ok(())
1006        });
1007
1008        // All leader updates are enqueued and then processed in a single task, so
1009        // that each asynchronous operation can be run in order.
1010        let (leader_updates_tx, mut leader_updates_rx) =
1011            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
1012        let _apply_leader_updates = cx.spawn_in(window, |this, mut cx| async move {
1013            while let Some((leader_id, update)) = leader_updates_rx.next().await {
1014                Self::process_leader_update(&this, leader_id, update, &mut cx)
1015                    .await
1016                    .log_err();
1017            }
1018
1019            Ok(())
1020        });
1021
1022        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
1023        let modal_layer = cx.new(|_| ModalLayer::new());
1024        let toast_layer = cx.new(|_| ToastLayer::new());
1025
1026        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
1027        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
1028        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
1029        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
1030        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
1031        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
1032        let status_bar = cx.new(|cx| {
1033            let mut status_bar = StatusBar::new(&center_pane.clone(), window, cx);
1034            status_bar.add_left_item(left_dock_buttons, window, cx);
1035            status_bar.add_right_item(right_dock_buttons, window, cx);
1036            status_bar.add_right_item(bottom_dock_buttons, window, cx);
1037            status_bar
1038        });
1039
1040        let session_id = app_state.session.read(cx).id().to_owned();
1041
1042        let mut active_call = None;
1043        if let Some(call) = ActiveCall::try_global(cx) {
1044            let call = call.clone();
1045            let subscriptions = vec![cx.subscribe_in(&call, window, Self::on_active_call_event)];
1046            active_call = Some((call, subscriptions));
1047        }
1048
1049        let (serializable_items_tx, serializable_items_rx) =
1050            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
1051        let _items_serializer = cx.spawn_in(window, |this, mut cx| async move {
1052            Self::serialize_items(&this, serializable_items_rx, &mut cx).await
1053        });
1054
1055        let subscriptions = vec![
1056            cx.observe_window_activation(window, Self::on_window_activation_changed),
1057            cx.observe_window_bounds(window, move |this, window, cx| {
1058                if this.bounds_save_task_queued.is_some() {
1059                    return;
1060                }
1061                this.bounds_save_task_queued =
1062                    Some(cx.spawn_in(window, |this, mut cx| async move {
1063                        cx.background_executor()
1064                            .timer(Duration::from_millis(100))
1065                            .await;
1066                        this.update_in(&mut cx, |this, window, cx| {
1067                            if let Some(display) = window.display(cx) {
1068                                if let Ok(display_uuid) = display.uuid() {
1069                                    let window_bounds = window.inner_window_bounds();
1070                                    if let Some(database_id) = workspace_id {
1071                                        cx.background_executor()
1072                                            .spawn(DB.set_window_open_status(
1073                                                database_id,
1074                                                SerializedWindowBounds(window_bounds),
1075                                                display_uuid,
1076                                            ))
1077                                            .detach_and_log_err(cx);
1078                                    }
1079                                }
1080                            }
1081                            this.bounds_save_task_queued.take();
1082                        })
1083                        .ok();
1084                    }));
1085                cx.notify();
1086            }),
1087            cx.observe_window_appearance(window, |_, window, cx| {
1088                let window_appearance = window.appearance();
1089
1090                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
1091
1092                ThemeSettings::reload_current_theme(cx);
1093                ThemeSettings::reload_current_icon_theme(cx);
1094            }),
1095            cx.on_release(move |this, cx| {
1096                this.app_state.workspace_store.update(cx, move |store, _| {
1097                    store.workspaces.remove(&window_handle.clone());
1098                })
1099            }),
1100        ];
1101
1102        cx.defer_in(window, |this, window, cx| {
1103            this.update_window_title(window, cx);
1104            this.show_initial_notifications(cx);
1105        });
1106        Workspace {
1107            weak_self: weak_handle.clone(),
1108            zoomed: None,
1109            zoomed_position: None,
1110            previous_dock_drag_coordinates: None,
1111            center: PaneGroup::new(center_pane.clone()),
1112            panes: vec![center_pane.clone()],
1113            panes_by_item: Default::default(),
1114            active_pane: center_pane.clone(),
1115            last_active_center_pane: Some(center_pane.downgrade()),
1116            last_active_view_id: None,
1117            status_bar,
1118            modal_layer,
1119            toast_layer,
1120            titlebar_item: None,
1121            notifications: Default::default(),
1122            left_dock,
1123            bottom_dock,
1124            right_dock,
1125            project: project.clone(),
1126            follower_states: Default::default(),
1127            last_leaders_by_pane: Default::default(),
1128            dispatching_keystrokes: Default::default(),
1129            window_edited: false,
1130            dirty_items: Default::default(),
1131            active_call,
1132            database_id: workspace_id,
1133            app_state,
1134            _observe_current_user,
1135            _apply_leader_updates,
1136            _schedule_serialize: None,
1137            leader_updates_tx,
1138            _subscriptions: subscriptions,
1139            pane_history_timestamp,
1140            workspace_actions: Default::default(),
1141            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
1142            bounds: Default::default(),
1143            centered_layout: false,
1144            bounds_save_task_queued: None,
1145            on_prompt_for_new_path: None,
1146            on_prompt_for_open_path: None,
1147            serializable_items_tx,
1148            _items_serializer,
1149            session_id: Some(session_id),
1150            serialized_ssh_project: None,
1151        }
1152    }
1153
1154    pub fn new_local(
1155        abs_paths: Vec<PathBuf>,
1156        app_state: Arc<AppState>,
1157        requesting_window: Option<WindowHandle<Workspace>>,
1158        env: Option<HashMap<String, String>>,
1159        cx: &mut App,
1160    ) -> Task<
1161        anyhow::Result<(
1162            WindowHandle<Workspace>,
1163            Vec<Option<Result<Box<dyn ItemHandle>, anyhow::Error>>>,
1164        )>,
1165    > {
1166        let project_handle = Project::local(
1167            app_state.client.clone(),
1168            app_state.node_runtime.clone(),
1169            app_state.user_store.clone(),
1170            app_state.languages.clone(),
1171            app_state.fs.clone(),
1172            env,
1173            cx,
1174        );
1175
1176        cx.spawn(|mut cx| async move {
1177            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
1178            for path in abs_paths.into_iter() {
1179                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
1180                    paths_to_open.push(canonical)
1181                } else {
1182                    paths_to_open.push(path)
1183                }
1184            }
1185
1186            let serialized_workspace: Option<SerializedWorkspace> =
1187                persistence::DB.workspace_for_roots(paths_to_open.as_slice());
1188
1189            let workspace_location = serialized_workspace
1190                .as_ref()
1191                .map(|ws| &ws.location)
1192                .and_then(|loc| match loc {
1193                    SerializedWorkspaceLocation::Local(_, order) => {
1194                        Some((loc.sorted_paths(), order.order()))
1195                    }
1196                    _ => None,
1197                });
1198
1199            if let Some((paths, order)) = workspace_location {
1200                paths_to_open = paths.iter().cloned().collect();
1201
1202                if order.iter().enumerate().any(|(i, &j)| i != j) {
1203                    project_handle
1204                        .update(&mut cx, |project, cx| {
1205                            project.set_worktrees_reordered(true, cx);
1206                        })
1207                        .log_err();
1208                }
1209            }
1210
1211            // Get project paths for all of the abs_paths
1212            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
1213                Vec::with_capacity(paths_to_open.len());
1214            for path in paths_to_open.into_iter() {
1215                if let Some((_, project_entry)) = cx
1216                    .update(|cx| {
1217                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
1218                    })?
1219                    .await
1220                    .log_err()
1221                {
1222                    project_paths.push((path, Some(project_entry)));
1223                } else {
1224                    project_paths.push((path, None));
1225                }
1226            }
1227
1228            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
1229                serialized_workspace.id
1230            } else {
1231                DB.next_id().await.unwrap_or_else(|_| Default::default())
1232            };
1233
1234            let toolchains = DB.toolchains(workspace_id).await?;
1235            for (toolchain, worktree_id) in toolchains {
1236                project_handle
1237                    .update(&mut cx, |this, cx| {
1238                        this.activate_toolchain(worktree_id, toolchain, cx)
1239                    })?
1240                    .await;
1241            }
1242            let window = if let Some(window) = requesting_window {
1243                cx.update_window(window.into(), |_, window, cx| {
1244                    window.replace_root(cx, |window, cx| {
1245                        Workspace::new(
1246                            Some(workspace_id),
1247                            project_handle.clone(),
1248                            app_state.clone(),
1249                            window,
1250                            cx,
1251                        )
1252                    });
1253                })?;
1254                window
1255            } else {
1256                let window_bounds_override = window_bounds_env_override();
1257
1258                let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
1259                    (Some(WindowBounds::Windowed(bounds)), None)
1260                } else {
1261                    let restorable_bounds = serialized_workspace
1262                        .as_ref()
1263                        .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
1264                        .or_else(|| {
1265                            let (display, window_bounds) = DB.last_window().log_err()?;
1266                            Some((display?, window_bounds?))
1267                        });
1268
1269                    if let Some((serialized_display, serialized_status)) = restorable_bounds {
1270                        (Some(serialized_status.0), Some(serialized_display))
1271                    } else {
1272                        (None, None)
1273                    }
1274                };
1275
1276                // Use the serialized workspace to construct the new window
1277                let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx))?;
1278                options.window_bounds = window_bounds;
1279                let centered_layout = serialized_workspace
1280                    .as_ref()
1281                    .map(|w| w.centered_layout)
1282                    .unwrap_or(false);
1283                cx.open_window(options, {
1284                    let app_state = app_state.clone();
1285                    let project_handle = project_handle.clone();
1286                    move |window, cx| {
1287                        cx.new(|cx| {
1288                            let mut workspace = Workspace::new(
1289                                Some(workspace_id),
1290                                project_handle,
1291                                app_state,
1292                                window,
1293                                cx,
1294                            );
1295                            workspace.centered_layout = centered_layout;
1296                            workspace
1297                        })
1298                    }
1299                })?
1300            };
1301
1302            notify_if_database_failed(window, &mut cx);
1303            let opened_items = window
1304                .update(&mut cx, |_workspace, window, cx| {
1305                    open_items(serialized_workspace, project_paths, window, cx)
1306                })?
1307                .await
1308                .unwrap_or_default();
1309
1310            window
1311                .update(&mut cx, |_, window, _| window.activate_window())
1312                .log_err();
1313            Ok((window, opened_items))
1314        })
1315    }
1316
1317    pub fn weak_handle(&self) -> WeakEntity<Self> {
1318        self.weak_self.clone()
1319    }
1320
1321    pub fn left_dock(&self) -> &Entity<Dock> {
1322        &self.left_dock
1323    }
1324
1325    pub fn bottom_dock(&self) -> &Entity<Dock> {
1326        &self.bottom_dock
1327    }
1328
1329    pub fn right_dock(&self) -> &Entity<Dock> {
1330        &self.right_dock
1331    }
1332
1333    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
1334        [&self.left_dock, &self.bottom_dock, &self.right_dock]
1335    }
1336
1337    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
1338        match position {
1339            DockPosition::Left => &self.left_dock,
1340            DockPosition::Bottom => &self.bottom_dock,
1341            DockPosition::Right => &self.right_dock,
1342        }
1343    }
1344
1345    pub fn is_edited(&self) -> bool {
1346        self.window_edited
1347    }
1348
1349    pub fn add_panel<T: Panel>(
1350        &mut self,
1351        panel: Entity<T>,
1352        window: &mut Window,
1353        cx: &mut Context<Self>,
1354    ) {
1355        let focus_handle = panel.panel_focus_handle(cx);
1356        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
1357            .detach();
1358
1359        let dock_position = panel.position(window, cx);
1360        let dock = self.dock_at_position(dock_position);
1361
1362        dock.update(cx, |dock, cx| {
1363            dock.add_panel(panel, self.weak_self.clone(), window, cx)
1364        });
1365    }
1366
1367    pub fn status_bar(&self) -> &Entity<StatusBar> {
1368        &self.status_bar
1369    }
1370
1371    pub fn app_state(&self) -> &Arc<AppState> {
1372        &self.app_state
1373    }
1374
1375    pub fn user_store(&self) -> &Entity<UserStore> {
1376        &self.app_state.user_store
1377    }
1378
1379    pub fn project(&self) -> &Entity<Project> {
1380        &self.project
1381    }
1382
1383    pub fn recent_navigation_history_iter(
1384        &self,
1385        cx: &App,
1386    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> {
1387        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
1388        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
1389        for pane in &self.panes {
1390            let pane = pane.read(cx);
1391            pane.nav_history()
1392                .for_each_entry(cx, |entry, (project_path, fs_path)| {
1393                    if let Some(fs_path) = &fs_path {
1394                        abs_paths_opened
1395                            .entry(fs_path.clone())
1396                            .or_default()
1397                            .insert(project_path.clone());
1398                    }
1399                    let timestamp = entry.timestamp;
1400                    match history.entry(project_path) {
1401                        hash_map::Entry::Occupied(mut entry) => {
1402                            let (_, old_timestamp) = entry.get();
1403                            if &timestamp > old_timestamp {
1404                                entry.insert((fs_path, timestamp));
1405                            }
1406                        }
1407                        hash_map::Entry::Vacant(entry) => {
1408                            entry.insert((fs_path, timestamp));
1409                        }
1410                    }
1411                });
1412        }
1413
1414        history
1415            .into_iter()
1416            .sorted_by_key(|(_, (_, timestamp))| *timestamp)
1417            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
1418            .rev()
1419            .filter(move |(history_path, abs_path)| {
1420                let latest_project_path_opened = abs_path
1421                    .as_ref()
1422                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
1423                    .and_then(|project_paths| {
1424                        project_paths
1425                            .iter()
1426                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
1427                    });
1428
1429                match latest_project_path_opened {
1430                    Some(latest_project_path_opened) => latest_project_path_opened == history_path,
1431                    None => true,
1432                }
1433            })
1434    }
1435
1436    pub fn recent_navigation_history(
1437        &self,
1438        limit: Option<usize>,
1439        cx: &App,
1440    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
1441        self.recent_navigation_history_iter(cx)
1442            .take(limit.unwrap_or(usize::MAX))
1443            .collect()
1444    }
1445
1446    fn navigate_history(
1447        &mut self,
1448        pane: WeakEntity<Pane>,
1449        mode: NavigationMode,
1450        window: &mut Window,
1451        cx: &mut Context<Workspace>,
1452    ) -> Task<Result<()>> {
1453        let to_load = if let Some(pane) = pane.upgrade() {
1454            pane.update(cx, |pane, cx| {
1455                window.focus(&pane.focus_handle(cx));
1456                loop {
1457                    // Retrieve the weak item handle from the history.
1458                    let entry = pane.nav_history_mut().pop(mode, cx)?;
1459
1460                    // If the item is still present in this pane, then activate it.
1461                    if let Some(index) = entry
1462                        .item
1463                        .upgrade()
1464                        .and_then(|v| pane.index_for_item(v.as_ref()))
1465                    {
1466                        let prev_active_item_index = pane.active_item_index();
1467                        pane.nav_history_mut().set_mode(mode);
1468                        pane.activate_item(index, true, true, window, cx);
1469                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
1470
1471                        let mut navigated = prev_active_item_index != pane.active_item_index();
1472                        if let Some(data) = entry.data {
1473                            navigated |= pane.active_item()?.navigate(data, window, cx);
1474                        }
1475
1476                        if navigated {
1477                            break None;
1478                        }
1479                    } else {
1480                        // If the item is no longer present in this pane, then retrieve its
1481                        // path info in order to reopen it.
1482                        break pane
1483                            .nav_history()
1484                            .path_for_item(entry.item.id())
1485                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
1486                    }
1487                }
1488            })
1489        } else {
1490            None
1491        };
1492
1493        if let Some((project_path, abs_path, entry)) = to_load {
1494            // If the item was no longer present, then load it again from its previous path, first try the local path
1495            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
1496
1497            cx.spawn_in(window, |workspace, mut cx| async move {
1498                let open_by_project_path = open_by_project_path.await;
1499                let mut navigated = false;
1500                match open_by_project_path
1501                    .with_context(|| format!("Navigating to {project_path:?}"))
1502                {
1503                    Ok((project_entry_id, build_item)) => {
1504                        let prev_active_item_id = pane.update(&mut cx, |pane, _| {
1505                            pane.nav_history_mut().set_mode(mode);
1506                            pane.active_item().map(|p| p.item_id())
1507                        })?;
1508
1509                        pane.update_in(&mut cx, |pane, window, cx| {
1510                            let item = pane.open_item(
1511                                project_entry_id,
1512                                true,
1513                                entry.is_preview,
1514                                true,
1515                                None,
1516                                window, cx,
1517                                build_item,
1518                            );
1519                            navigated |= Some(item.item_id()) != prev_active_item_id;
1520                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
1521                            if let Some(data) = entry.data {
1522                                navigated |= item.navigate(data, window, cx);
1523                            }
1524                        })?;
1525                    }
1526                    Err(open_by_project_path_e) => {
1527                        // Fall back to opening by abs path, in case an external file was opened and closed,
1528                        // and its worktree is now dropped
1529                        if let Some(abs_path) = abs_path {
1530                            let prev_active_item_id = pane.update(&mut cx, |pane, _| {
1531                                pane.nav_history_mut().set_mode(mode);
1532                                pane.active_item().map(|p| p.item_id())
1533                            })?;
1534                            let open_by_abs_path = workspace.update_in(&mut cx, |workspace, window, cx| {
1535                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
1536                            })?;
1537                            match open_by_abs_path
1538                                .await
1539                                .with_context(|| format!("Navigating to {abs_path:?}"))
1540                            {
1541                                Ok(item) => {
1542                                    pane.update_in(&mut cx, |pane, window, cx| {
1543                                        navigated |= Some(item.item_id()) != prev_active_item_id;
1544                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
1545                                        if let Some(data) = entry.data {
1546                                            navigated |= item.navigate(data, window, cx);
1547                                        }
1548                                    })?;
1549                                }
1550                                Err(open_by_abs_path_e) => {
1551                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
1552                                }
1553                            }
1554                        }
1555                    }
1556                }
1557
1558                if !navigated {
1559                    workspace
1560                        .update_in(&mut cx, |workspace, window, cx| {
1561                            Self::navigate_history(workspace, pane, mode, window, cx)
1562                        })?
1563                        .await?;
1564                }
1565
1566                Ok(())
1567            })
1568        } else {
1569            Task::ready(Ok(()))
1570        }
1571    }
1572
1573    pub fn go_back(
1574        &mut self,
1575        pane: WeakEntity<Pane>,
1576        window: &mut Window,
1577        cx: &mut Context<Workspace>,
1578    ) -> Task<Result<()>> {
1579        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
1580    }
1581
1582    pub fn go_forward(
1583        &mut self,
1584        pane: WeakEntity<Pane>,
1585        window: &mut Window,
1586        cx: &mut Context<Workspace>,
1587    ) -> Task<Result<()>> {
1588        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
1589    }
1590
1591    pub fn reopen_closed_item(
1592        &mut self,
1593        window: &mut Window,
1594        cx: &mut Context<Workspace>,
1595    ) -> Task<Result<()>> {
1596        self.navigate_history(
1597            self.active_pane().downgrade(),
1598            NavigationMode::ReopeningClosedItem,
1599            window,
1600            cx,
1601        )
1602    }
1603
1604    pub fn client(&self) -> &Arc<Client> {
1605        &self.app_state.client
1606    }
1607
1608    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
1609        self.titlebar_item = Some(item);
1610        cx.notify();
1611    }
1612
1613    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
1614        self.on_prompt_for_new_path = Some(prompt)
1615    }
1616
1617    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
1618        self.on_prompt_for_open_path = Some(prompt)
1619    }
1620
1621    pub fn serialized_ssh_project(&self) -> Option<SerializedSshProject> {
1622        self.serialized_ssh_project.clone()
1623    }
1624
1625    pub fn set_serialized_ssh_project(&mut self, serialized_ssh_project: SerializedSshProject) {
1626        self.serialized_ssh_project = Some(serialized_ssh_project);
1627    }
1628
1629    pub fn prompt_for_open_path(
1630        &mut self,
1631        path_prompt_options: PathPromptOptions,
1632        lister: DirectoryLister,
1633        window: &mut Window,
1634        cx: &mut Context<Self>,
1635    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
1636        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
1637            let prompt = self.on_prompt_for_open_path.take().unwrap();
1638            let rx = prompt(self, lister, window, cx);
1639            self.on_prompt_for_open_path = Some(prompt);
1640            rx
1641        } else {
1642            let (tx, rx) = oneshot::channel();
1643            let abs_path = cx.prompt_for_paths(path_prompt_options);
1644
1645            cx.spawn_in(window, |this, mut cx| async move {
1646                let Ok(result) = abs_path.await else {
1647                    return Ok(());
1648                };
1649
1650                match result {
1651                    Ok(result) => {
1652                        tx.send(result).log_err();
1653                    }
1654                    Err(err) => {
1655                        let rx = this.update_in(&mut cx, |this, window, cx| {
1656                            this.show_portal_error(err.to_string(), cx);
1657                            let prompt = this.on_prompt_for_open_path.take().unwrap();
1658                            let rx = prompt(this, lister, window, cx);
1659                            this.on_prompt_for_open_path = Some(prompt);
1660                            rx
1661                        })?;
1662                        if let Ok(path) = rx.await {
1663                            tx.send(path).log_err();
1664                        }
1665                    }
1666                };
1667                anyhow::Ok(())
1668            })
1669            .detach();
1670
1671            rx
1672        }
1673    }
1674
1675    pub fn prompt_for_new_path(
1676        &mut self,
1677        window: &mut Window,
1678        cx: &mut Context<Self>,
1679    ) -> oneshot::Receiver<Option<ProjectPath>> {
1680        if (self.project.read(cx).is_via_collab() || self.project.read(cx).is_via_ssh())
1681            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
1682        {
1683            let prompt = self.on_prompt_for_new_path.take().unwrap();
1684            let rx = prompt(self, window, cx);
1685            self.on_prompt_for_new_path = Some(prompt);
1686            rx
1687        } else {
1688            let start_abs_path = self
1689                .project
1690                .update(cx, |project, cx| {
1691                    let worktree = project.visible_worktrees(cx).next()?;
1692                    Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
1693                })
1694                .unwrap_or_else(|| Path::new("").into());
1695
1696            let (tx, rx) = oneshot::channel();
1697            let abs_path = cx.prompt_for_new_path(&start_abs_path);
1698            cx.spawn_in(window, |this, mut cx| async move {
1699                let abs_path = match abs_path.await? {
1700                    Ok(path) => path,
1701                    Err(err) => {
1702                        let rx = this.update_in(&mut cx, |this, window, cx| {
1703                            this.show_portal_error(err.to_string(), cx);
1704
1705                            let prompt = this.on_prompt_for_new_path.take().unwrap();
1706                            let rx = prompt(this, window, cx);
1707                            this.on_prompt_for_new_path = Some(prompt);
1708                            rx
1709                        })?;
1710                        if let Ok(path) = rx.await {
1711                            tx.send(path).log_err();
1712                        }
1713                        return anyhow::Ok(());
1714                    }
1715                };
1716
1717                let project_path = abs_path.and_then(|abs_path| {
1718                    this.update(&mut cx, |this, cx| {
1719                        this.project.update(cx, |project, cx| {
1720                            project.find_or_create_worktree(abs_path, true, cx)
1721                        })
1722                    })
1723                    .ok()
1724                });
1725
1726                if let Some(project_path) = project_path {
1727                    let (worktree, path) = project_path.await?;
1728                    let worktree_id = worktree.read_with(&cx, |worktree, _| worktree.id())?;
1729                    tx.send(Some(ProjectPath {
1730                        worktree_id,
1731                        path: path.into(),
1732                    }))
1733                    .ok();
1734                } else {
1735                    tx.send(None).ok();
1736                }
1737                anyhow::Ok(())
1738            })
1739            .detach_and_log_err(cx);
1740
1741            rx
1742        }
1743    }
1744
1745    pub fn titlebar_item(&self) -> Option<AnyView> {
1746        self.titlebar_item.clone()
1747    }
1748
1749    /// Call the given callback with a workspace whose project is local.
1750    ///
1751    /// If the given workspace has a local project, then it will be passed
1752    /// to the callback. Otherwise, a new empty window will be created.
1753    pub fn with_local_workspace<T, F>(
1754        &mut self,
1755        window: &mut Window,
1756        cx: &mut Context<Self>,
1757        callback: F,
1758    ) -> Task<Result<T>>
1759    where
1760        T: 'static,
1761        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
1762    {
1763        if self.project.read(cx).is_local() {
1764            Task::ready(Ok(callback(self, window, cx)))
1765        } else {
1766            let env = self.project.read(cx).cli_environment(cx);
1767            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, env, cx);
1768            cx.spawn_in(window, |_vh, mut cx| async move {
1769                let (workspace, _) = task.await?;
1770                workspace.update(&mut cx, callback)
1771            })
1772        }
1773    }
1774
1775    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
1776        self.project.read(cx).worktrees(cx)
1777    }
1778
1779    pub fn visible_worktrees<'a>(
1780        &self,
1781        cx: &'a App,
1782    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
1783        self.project.read(cx).visible_worktrees(cx)
1784    }
1785
1786    #[cfg(any(test, feature = "test-support"))]
1787    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static {
1788        let futures = self
1789            .worktrees(cx)
1790            .filter_map(|worktree| worktree.read(cx).as_local())
1791            .map(|worktree| worktree.scan_complete())
1792            .collect::<Vec<_>>();
1793        async move {
1794            for future in futures {
1795                future.await;
1796            }
1797        }
1798    }
1799
1800    pub fn close_global(_: &CloseWindow, cx: &mut App) {
1801        cx.defer(|cx| {
1802            cx.windows().iter().find(|window| {
1803                window
1804                    .update(cx, |_, window, _| {
1805                        if window.is_window_active() {
1806                            //This can only get called when the window's project connection has been lost
1807                            //so we don't need to prompt the user for anything and instead just close the window
1808                            window.remove_window();
1809                            true
1810                        } else {
1811                            false
1812                        }
1813                    })
1814                    .unwrap_or(false)
1815            });
1816        });
1817    }
1818
1819    pub fn close_window(&mut self, _: &CloseWindow, window: &mut Window, cx: &mut Context<Self>) {
1820        let prepare = self.prepare_to_close(CloseIntent::CloseWindow, window, cx);
1821        cx.spawn_in(window, |_, mut cx| async move {
1822            if prepare.await? {
1823                cx.update(|window, _cx| window.remove_window())?;
1824            }
1825            anyhow::Ok(())
1826        })
1827        .detach_and_log_err(cx)
1828    }
1829
1830    pub fn move_focused_panel_to_next_position(
1831        &mut self,
1832        _: &MoveFocusedPanelToNextPosition,
1833        window: &mut Window,
1834        cx: &mut Context<Self>,
1835    ) {
1836        let docks = self.all_docks();
1837        let active_dock = docks
1838            .into_iter()
1839            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
1840
1841        if let Some(dock) = active_dock {
1842            dock.update(cx, |dock, cx| {
1843                let active_panel = dock
1844                    .active_panel()
1845                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
1846
1847                if let Some(panel) = active_panel {
1848                    panel.move_to_next_position(window, cx);
1849                }
1850            })
1851        }
1852    }
1853
1854    pub fn prepare_to_close(
1855        &mut self,
1856        close_intent: CloseIntent,
1857        window: &mut Window,
1858        cx: &mut Context<Self>,
1859    ) -> Task<Result<bool>> {
1860        let active_call = self.active_call().cloned();
1861
1862        // On Linux and Windows, closing the last window should restore the last workspace.
1863        let save_last_workspace = cfg!(not(target_os = "macos"))
1864            && close_intent != CloseIntent::ReplaceWindow
1865            && cx.windows().len() == 1;
1866
1867        cx.spawn_in(window, |this, mut cx| async move {
1868            let workspace_count = cx.update(|_window, cx| {
1869                cx.windows()
1870                    .iter()
1871                    .filter(|window| window.downcast::<Workspace>().is_some())
1872                    .count()
1873            })?;
1874
1875            if let Some(active_call) = active_call {
1876                if close_intent != CloseIntent::Quit
1877                    && workspace_count == 1
1878                    && active_call.read_with(&cx, |call, _| call.room().is_some())?
1879                {
1880                    let answer = cx.update(|window, cx| {
1881                        window.prompt(
1882                            PromptLevel::Warning,
1883                            "Do you want to leave the current call?",
1884                            None,
1885                            &["Close window and hang up", "Cancel"],
1886                            cx,
1887                        )
1888                    })?;
1889
1890                    if answer.await.log_err() == Some(1) {
1891                        return anyhow::Ok(false);
1892                    } else {
1893                        active_call
1894                            .update(&mut cx, |call, cx| call.hang_up(cx))?
1895                            .await
1896                            .log_err();
1897                    }
1898                }
1899            }
1900
1901            let save_result = this
1902                .update_in(&mut cx, |this, window, cx| {
1903                    this.save_all_internal(SaveIntent::Close, window, cx)
1904                })?
1905                .await;
1906
1907            // If we're not quitting, but closing, we remove the workspace from
1908            // the current session.
1909            if close_intent != CloseIntent::Quit
1910                && !save_last_workspace
1911                && save_result.as_ref().map_or(false, |&res| res)
1912            {
1913                this.update_in(&mut cx, |this, window, cx| {
1914                    this.remove_from_session(window, cx)
1915                })?
1916                .await;
1917            }
1918
1919            save_result
1920        })
1921    }
1922
1923    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
1924        self.save_all_internal(
1925            action.save_intent.unwrap_or(SaveIntent::SaveAll),
1926            window,
1927            cx,
1928        )
1929        .detach_and_log_err(cx);
1930    }
1931
1932    fn send_keystrokes(
1933        &mut self,
1934        action: &SendKeystrokes,
1935        window: &mut Window,
1936        cx: &mut Context<Self>,
1937    ) {
1938        let mut state = self.dispatching_keystrokes.borrow_mut();
1939        if !state.0.insert(action.0.clone()) {
1940            cx.propagate();
1941            return;
1942        }
1943        let mut keystrokes: Vec<Keystroke> = action
1944            .0
1945            .split(' ')
1946            .flat_map(|k| Keystroke::parse(k).log_err())
1947            .collect();
1948        keystrokes.reverse();
1949
1950        state.1.append(&mut keystrokes);
1951        drop(state);
1952
1953        let keystrokes = self.dispatching_keystrokes.clone();
1954        window
1955            .spawn(cx, |mut cx| async move {
1956                // limit to 100 keystrokes to avoid infinite recursion.
1957                for _ in 0..100 {
1958                    let Some(keystroke) = keystrokes.borrow_mut().1.pop() else {
1959                        keystrokes.borrow_mut().0.clear();
1960                        return Ok(());
1961                    };
1962                    cx.update(|window, cx| {
1963                        let focused = window.focused(cx);
1964                        window.dispatch_keystroke(keystroke.clone(), cx);
1965                        if window.focused(cx) != focused {
1966                            // dispatch_keystroke may cause the focus to change.
1967                            // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
1968                            // And we need that to happen before the next keystroke to keep vim mode happy...
1969                            // (Note that the tests always do this implicitly, so you must manually test with something like:
1970                            //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
1971                            // )
1972                            window.draw(cx);
1973                        }
1974                    })?;
1975                }
1976
1977                *keystrokes.borrow_mut() = Default::default();
1978                Err(anyhow!("over 100 keystrokes passed to send_keystrokes"))
1979            })
1980            .detach_and_log_err(cx);
1981    }
1982
1983    fn save_all_internal(
1984        &mut self,
1985        mut save_intent: SaveIntent,
1986        window: &mut Window,
1987        cx: &mut Context<Self>,
1988    ) -> Task<Result<bool>> {
1989        if self.project.read(cx).is_disconnected(cx) {
1990            return Task::ready(Ok(true));
1991        }
1992        let dirty_items = self
1993            .panes
1994            .iter()
1995            .flat_map(|pane| {
1996                pane.read(cx).items().filter_map(|item| {
1997                    if item.is_dirty(cx) {
1998                        item.tab_description(0, cx);
1999                        Some((pane.downgrade(), item.boxed_clone()))
2000                    } else {
2001                        None
2002                    }
2003                })
2004            })
2005            .collect::<Vec<_>>();
2006
2007        let project = self.project.clone();
2008        cx.spawn_in(window, |workspace, mut cx| async move {
2009            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
2010                let (serialize_tasks, remaining_dirty_items) =
2011                    workspace.update_in(&mut cx, |workspace, window, cx| {
2012                        let mut remaining_dirty_items = Vec::new();
2013                        let mut serialize_tasks = Vec::new();
2014                        for (pane, item) in dirty_items {
2015                            if let Some(task) = item
2016                                .to_serializable_item_handle(cx)
2017                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
2018                            {
2019                                serialize_tasks.push(task);
2020                            } else {
2021                                remaining_dirty_items.push((pane, item));
2022                            }
2023                        }
2024                        (serialize_tasks, remaining_dirty_items)
2025                    })?;
2026
2027                futures::future::try_join_all(serialize_tasks).await?;
2028
2029                if remaining_dirty_items.len() > 1 {
2030                    let answer = workspace.update_in(&mut cx, |_, window, cx| {
2031                        let detail = Pane::file_names_for_prompt(
2032                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
2033                            cx,
2034                        );
2035                        window.prompt(
2036                            PromptLevel::Warning,
2037                            &"Do you want to save all changes in the following files?",
2038                            Some(&detail),
2039                            &["Save all", "Discard all", "Cancel"],
2040                            cx,
2041                        )
2042                    })?;
2043                    match answer.await.log_err() {
2044                        Some(0) => save_intent = SaveIntent::SaveAll,
2045                        Some(1) => save_intent = SaveIntent::Skip,
2046                        Some(2) => return Ok(false),
2047                        _ => {}
2048                    }
2049                }
2050
2051                remaining_dirty_items
2052            } else {
2053                dirty_items
2054            };
2055
2056            for (pane, item) in dirty_items {
2057                let (singleton, project_entry_ids) =
2058                    cx.update(|_, cx| (item.is_singleton(cx), item.project_entry_ids(cx)))?;
2059                if singleton || !project_entry_ids.is_empty() {
2060                    if !Pane::save_item(project.clone(), &pane, &*item, save_intent, &mut cx)
2061                        .await?
2062                    {
2063                        return Ok(false);
2064                    }
2065                }
2066            }
2067            Ok(true)
2068        })
2069    }
2070
2071    pub fn open_workspace_for_paths(
2072        &mut self,
2073        replace_current_window: bool,
2074        paths: Vec<PathBuf>,
2075        window: &mut Window,
2076        cx: &mut Context<Self>,
2077    ) -> Task<Result<()>> {
2078        let window_handle = window.window_handle().downcast::<Self>();
2079        let is_remote = self.project.read(cx).is_via_collab();
2080        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
2081        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
2082
2083        let window_to_replace = if replace_current_window {
2084            window_handle
2085        } else if is_remote || has_worktree || has_dirty_items {
2086            None
2087        } else {
2088            window_handle
2089        };
2090        let app_state = self.app_state.clone();
2091
2092        cx.spawn(|_, cx| async move {
2093            cx.update(|cx| {
2094                open_paths(
2095                    &paths,
2096                    app_state,
2097                    OpenOptions {
2098                        replace_window: window_to_replace,
2099                        ..Default::default()
2100                    },
2101                    cx,
2102                )
2103            })?
2104            .await?;
2105            Ok(())
2106        })
2107    }
2108
2109    #[allow(clippy::type_complexity)]
2110    pub fn open_paths(
2111        &mut self,
2112        mut abs_paths: Vec<PathBuf>,
2113        options: OpenOptions,
2114        pane: Option<WeakEntity<Pane>>,
2115        window: &mut Window,
2116        cx: &mut Context<Self>,
2117    ) -> Task<Vec<Option<Result<Box<dyn ItemHandle>, anyhow::Error>>>> {
2118        log::info!("open paths {abs_paths:?}");
2119
2120        let fs = self.app_state.fs.clone();
2121
2122        // Sort the paths to ensure we add worktrees for parents before their children.
2123        abs_paths.sort_unstable();
2124        cx.spawn_in(window, move |this, mut cx| async move {
2125            let mut tasks = Vec::with_capacity(abs_paths.len());
2126
2127            for abs_path in &abs_paths {
2128                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
2129                    OpenVisible::All => Some(true),
2130                    OpenVisible::None => Some(false),
2131                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
2132                        Some(Some(metadata)) => Some(!metadata.is_dir),
2133                        Some(None) => Some(true),
2134                        None => None,
2135                    },
2136                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
2137                        Some(Some(metadata)) => Some(metadata.is_dir),
2138                        Some(None) => Some(false),
2139                        None => None,
2140                    },
2141                };
2142                let project_path = match visible {
2143                    Some(visible) => match this
2144                        .update(&mut cx, |this, cx| {
2145                            Workspace::project_path_for_path(
2146                                this.project.clone(),
2147                                abs_path,
2148                                visible,
2149                                cx,
2150                            )
2151                        })
2152                        .log_err()
2153                    {
2154                        Some(project_path) => project_path.await.log_err(),
2155                        None => None,
2156                    },
2157                    None => None,
2158                };
2159
2160                let this = this.clone();
2161                let abs_path: Arc<Path> = SanitizedPath::from(abs_path.clone()).into();
2162                let fs = fs.clone();
2163                let pane = pane.clone();
2164                let task = cx.spawn(move |mut cx| async move {
2165                    let (worktree, project_path) = project_path?;
2166                    if fs.is_dir(&abs_path).await {
2167                        this.update(&mut cx, |workspace, cx| {
2168                            let worktree = worktree.read(cx);
2169                            let worktree_abs_path = worktree.abs_path();
2170                            let entry_id = if abs_path.as_ref() == worktree_abs_path.as_ref() {
2171                                worktree.root_entry()
2172                            } else {
2173                                abs_path
2174                                    .strip_prefix(worktree_abs_path.as_ref())
2175                                    .ok()
2176                                    .and_then(|relative_path| {
2177                                        worktree.entry_for_path(relative_path)
2178                                    })
2179                            }
2180                            .map(|entry| entry.id);
2181                            if let Some(entry_id) = entry_id {
2182                                workspace.project.update(cx, |_, cx| {
2183                                    cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
2184                                })
2185                            }
2186                        })
2187                        .log_err()?;
2188                        None
2189                    } else {
2190                        Some(
2191                            this.update_in(&mut cx, |this, window, cx| {
2192                                this.open_path(
2193                                    project_path,
2194                                    pane,
2195                                    options.focus.unwrap_or(true),
2196                                    window,
2197                                    cx,
2198                                )
2199                            })
2200                            .log_err()?
2201                            .await,
2202                        )
2203                    }
2204                });
2205                tasks.push(task);
2206            }
2207
2208            futures::future::join_all(tasks).await
2209        })
2210    }
2211
2212    pub fn open_resolved_path(
2213        &mut self,
2214        path: ResolvedPath,
2215        window: &mut Window,
2216        cx: &mut Context<Self>,
2217    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
2218        match path {
2219            ResolvedPath::ProjectPath { project_path, .. } => {
2220                self.open_path(project_path, None, true, window, cx)
2221            }
2222            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
2223                path,
2224                OpenOptions {
2225                    visible: Some(OpenVisible::None),
2226                    ..Default::default()
2227                },
2228                window,
2229                cx,
2230            ),
2231        }
2232    }
2233
2234    pub fn absolute_path_of_worktree(
2235        &self,
2236        worktree_id: WorktreeId,
2237        cx: &mut Context<Self>,
2238    ) -> Option<PathBuf> {
2239        self.project
2240            .read(cx)
2241            .worktree_for_id(worktree_id, cx)
2242            // TODO: use `abs_path` or `root_dir`
2243            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
2244    }
2245
2246    fn add_folder_to_project(
2247        &mut self,
2248        _: &AddFolderToProject,
2249        window: &mut Window,
2250        cx: &mut Context<Self>,
2251    ) {
2252        let project = self.project.read(cx);
2253        if project.is_via_collab() {
2254            self.show_error(
2255                &anyhow!("You cannot add folders to someone else's project"),
2256                cx,
2257            );
2258            return;
2259        }
2260        let paths = self.prompt_for_open_path(
2261            PathPromptOptions {
2262                files: false,
2263                directories: true,
2264                multiple: true,
2265            },
2266            DirectoryLister::Project(self.project.clone()),
2267            window,
2268            cx,
2269        );
2270        cx.spawn_in(window, |this, mut cx| async move {
2271            if let Some(paths) = paths.await.log_err().flatten() {
2272                let results = this
2273                    .update_in(&mut cx, |this, window, cx| {
2274                        this.open_paths(
2275                            paths,
2276                            OpenOptions {
2277                                visible: Some(OpenVisible::All),
2278                                ..Default::default()
2279                            },
2280                            None,
2281                            window,
2282                            cx,
2283                        )
2284                    })?
2285                    .await;
2286                for result in results.into_iter().flatten() {
2287                    result.log_err();
2288                }
2289            }
2290            anyhow::Ok(())
2291        })
2292        .detach_and_log_err(cx);
2293    }
2294
2295    pub fn project_path_for_path(
2296        project: Entity<Project>,
2297        abs_path: &Path,
2298        visible: bool,
2299        cx: &mut App,
2300    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
2301        let entry = project.update(cx, |project, cx| {
2302            project.find_or_create_worktree(abs_path, visible, cx)
2303        });
2304        cx.spawn(|mut cx| async move {
2305            let (worktree, path) = entry.await?;
2306            let worktree_id = worktree.update(&mut cx, |t, _| t.id())?;
2307            Ok((
2308                worktree,
2309                ProjectPath {
2310                    worktree_id,
2311                    path: path.into(),
2312                },
2313            ))
2314        })
2315    }
2316
2317    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
2318        self.panes.iter().flat_map(|pane| pane.read(cx).items())
2319    }
2320
2321    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
2322        self.items_of_type(cx).max_by_key(|item| item.item_id())
2323    }
2324
2325    pub fn items_of_type<'a, T: Item>(
2326        &'a self,
2327        cx: &'a App,
2328    ) -> impl 'a + Iterator<Item = Entity<T>> {
2329        self.panes
2330            .iter()
2331            .flat_map(|pane| pane.read(cx).items_of_type())
2332    }
2333
2334    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
2335        self.active_pane().read(cx).active_item()
2336    }
2337
2338    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
2339        let item = self.active_item(cx)?;
2340        item.to_any().downcast::<I>().ok()
2341    }
2342
2343    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
2344        self.active_item(cx).and_then(|item| item.project_path(cx))
2345    }
2346
2347    pub fn save_active_item(
2348        &mut self,
2349        save_intent: SaveIntent,
2350        window: &mut Window,
2351        cx: &mut App,
2352    ) -> Task<Result<()>> {
2353        let project = self.project.clone();
2354        let pane = self.active_pane();
2355        let item = pane.read(cx).active_item();
2356        let pane = pane.downgrade();
2357
2358        window.spawn(cx, |mut cx| async move {
2359            if let Some(item) = item {
2360                Pane::save_item(project, &pane, item.as_ref(), save_intent, &mut cx)
2361                    .await
2362                    .map(|_| ())
2363            } else {
2364                Ok(())
2365            }
2366        })
2367    }
2368
2369    pub fn close_inactive_items_and_panes(
2370        &mut self,
2371        action: &CloseInactiveTabsAndPanes,
2372        window: &mut Window,
2373        cx: &mut Context<Self>,
2374    ) {
2375        if let Some(task) = self.close_all_internal(
2376            true,
2377            action.save_intent.unwrap_or(SaveIntent::Close),
2378            window,
2379            cx,
2380        ) {
2381            task.detach_and_log_err(cx)
2382        }
2383    }
2384
2385    pub fn close_all_items_and_panes(
2386        &mut self,
2387        action: &CloseAllItemsAndPanes,
2388        window: &mut Window,
2389        cx: &mut Context<Self>,
2390    ) {
2391        if let Some(task) = self.close_all_internal(
2392            false,
2393            action.save_intent.unwrap_or(SaveIntent::Close),
2394            window,
2395            cx,
2396        ) {
2397            task.detach_and_log_err(cx)
2398        }
2399    }
2400
2401    fn close_all_internal(
2402        &mut self,
2403        retain_active_pane: bool,
2404        save_intent: SaveIntent,
2405        window: &mut Window,
2406        cx: &mut Context<Self>,
2407    ) -> Option<Task<Result<()>>> {
2408        let current_pane = self.active_pane();
2409
2410        let mut tasks = Vec::new();
2411
2412        if retain_active_pane {
2413            if let Some(current_pane_close) = current_pane.update(cx, |pane, cx| {
2414                pane.close_inactive_items(
2415                    &CloseInactiveItems {
2416                        save_intent: None,
2417                        close_pinned: false,
2418                    },
2419                    window,
2420                    cx,
2421                )
2422            }) {
2423                tasks.push(current_pane_close);
2424            };
2425        }
2426
2427        for pane in self.panes() {
2428            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
2429                continue;
2430            }
2431
2432            if let Some(close_pane_items) = pane.update(cx, |pane: &mut Pane, cx| {
2433                pane.close_all_items(
2434                    &CloseAllItems {
2435                        save_intent: Some(save_intent),
2436                        close_pinned: false,
2437                    },
2438                    window,
2439                    cx,
2440                )
2441            }) {
2442                tasks.push(close_pane_items)
2443            }
2444        }
2445
2446        if tasks.is_empty() {
2447            None
2448        } else {
2449            Some(cx.spawn_in(window, |_, _| async move {
2450                for task in tasks {
2451                    task.await?
2452                }
2453                Ok(())
2454            }))
2455        }
2456    }
2457
2458    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
2459        self.dock_at_position(position).read(cx).is_open()
2460    }
2461
2462    pub fn toggle_dock(
2463        &mut self,
2464        dock_side: DockPosition,
2465        window: &mut Window,
2466        cx: &mut Context<Self>,
2467    ) {
2468        let dock = self.dock_at_position(dock_side);
2469        let mut focus_center = false;
2470        let mut reveal_dock = false;
2471        dock.update(cx, |dock, cx| {
2472            let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
2473            let was_visible = dock.is_open() && !other_is_zoomed;
2474            dock.set_open(!was_visible, window, cx);
2475
2476            if dock.active_panel().is_none() && dock.panels_len() > 0 {
2477                dock.activate_panel(0, window, cx);
2478            }
2479
2480            if let Some(active_panel) = dock.active_panel() {
2481                if was_visible {
2482                    if active_panel
2483                        .panel_focus_handle(cx)
2484                        .contains_focused(window, cx)
2485                    {
2486                        focus_center = true;
2487                    }
2488                } else {
2489                    let focus_handle = &active_panel.panel_focus_handle(cx);
2490                    window.focus(focus_handle);
2491                    reveal_dock = true;
2492                }
2493            }
2494        });
2495
2496        if reveal_dock {
2497            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
2498        }
2499
2500        if focus_center {
2501            self.active_pane
2502                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
2503        }
2504
2505        cx.notify();
2506        self.serialize_workspace(window, cx);
2507    }
2508
2509    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
2510        for dock in self.all_docks() {
2511            dock.update(cx, |dock, cx| {
2512                dock.set_open(false, window, cx);
2513            });
2514        }
2515
2516        cx.focus_self(window);
2517        cx.notify();
2518        self.serialize_workspace(window, cx);
2519    }
2520
2521    /// Transfer focus to the panel of the given type.
2522    pub fn focus_panel<T: Panel>(
2523        &mut self,
2524        window: &mut Window,
2525        cx: &mut Context<Self>,
2526    ) -> Option<Entity<T>> {
2527        let panel = self.focus_or_unfocus_panel::<T>(window, cx, |_, _, _| true)?;
2528        panel.to_any().downcast().ok()
2529    }
2530
2531    /// Focus the panel of the given type if it isn't already focused. If it is
2532    /// already focused, then transfer focus back to the workspace center.
2533    pub fn toggle_panel_focus<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
2534        self.focus_or_unfocus_panel::<T>(window, cx, |panel, window, cx| {
2535            !panel.panel_focus_handle(cx).contains_focused(window, cx)
2536        });
2537    }
2538
2539    pub fn activate_panel_for_proto_id(
2540        &mut self,
2541        panel_id: PanelId,
2542        window: &mut Window,
2543        cx: &mut Context<Self>,
2544    ) -> Option<Arc<dyn PanelHandle>> {
2545        let mut panel = None;
2546        for dock in self.all_docks() {
2547            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
2548                panel = dock.update(cx, |dock, cx| {
2549                    dock.activate_panel(panel_index, window, cx);
2550                    dock.set_open(true, window, cx);
2551                    dock.active_panel().cloned()
2552                });
2553                break;
2554            }
2555        }
2556
2557        if panel.is_some() {
2558            cx.notify();
2559            self.serialize_workspace(window, cx);
2560        }
2561
2562        panel
2563    }
2564
2565    /// Focus or unfocus the given panel type, depending on the given callback.
2566    fn focus_or_unfocus_panel<T: Panel>(
2567        &mut self,
2568        window: &mut Window,
2569        cx: &mut Context<Self>,
2570        should_focus: impl Fn(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
2571    ) -> Option<Arc<dyn PanelHandle>> {
2572        let mut result_panel = None;
2573        let mut serialize = false;
2574        for dock in self.all_docks() {
2575            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
2576                let mut focus_center = false;
2577                let panel = dock.update(cx, |dock, cx| {
2578                    dock.activate_panel(panel_index, window, cx);
2579
2580                    let panel = dock.active_panel().cloned();
2581                    if let Some(panel) = panel.as_ref() {
2582                        if should_focus(&**panel, window, cx) {
2583                            dock.set_open(true, window, cx);
2584                            panel.panel_focus_handle(cx).focus(window);
2585                        } else {
2586                            focus_center = true;
2587                        }
2588                    }
2589                    panel
2590                });
2591
2592                if focus_center {
2593                    self.active_pane
2594                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
2595                }
2596
2597                result_panel = panel;
2598                serialize = true;
2599                break;
2600            }
2601        }
2602
2603        if serialize {
2604            self.serialize_workspace(window, cx);
2605        }
2606
2607        cx.notify();
2608        result_panel
2609    }
2610
2611    /// Open the panel of the given type
2612    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
2613        for dock in self.all_docks() {
2614            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
2615                dock.update(cx, |dock, cx| {
2616                    dock.activate_panel(panel_index, window, cx);
2617                    dock.set_open(true, window, cx);
2618                });
2619            }
2620        }
2621    }
2622
2623    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
2624        self.all_docks()
2625            .iter()
2626            .find_map(|dock| dock.read(cx).panel::<T>())
2627    }
2628
2629    fn dismiss_zoomed_items_to_reveal(
2630        &mut self,
2631        dock_to_reveal: Option<DockPosition>,
2632        window: &mut Window,
2633        cx: &mut Context<Self>,
2634    ) {
2635        // If a center pane is zoomed, unzoom it.
2636        for pane in &self.panes {
2637            if pane != &self.active_pane || dock_to_reveal.is_some() {
2638                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
2639            }
2640        }
2641
2642        // If another dock is zoomed, hide it.
2643        let mut focus_center = false;
2644        for dock in self.all_docks() {
2645            dock.update(cx, |dock, cx| {
2646                if Some(dock.position()) != dock_to_reveal {
2647                    if let Some(panel) = dock.active_panel() {
2648                        if panel.is_zoomed(window, cx) {
2649                            focus_center |=
2650                                panel.panel_focus_handle(cx).contains_focused(window, cx);
2651                            dock.set_open(false, window, cx);
2652                        }
2653                    }
2654                }
2655            });
2656        }
2657
2658        if focus_center {
2659            self.active_pane
2660                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
2661        }
2662
2663        if self.zoomed_position != dock_to_reveal {
2664            self.zoomed = None;
2665            self.zoomed_position = None;
2666            cx.emit(Event::ZoomChanged);
2667        }
2668
2669        cx.notify();
2670    }
2671
2672    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
2673        let pane = cx.new(|cx| {
2674            let mut pane = Pane::new(
2675                self.weak_handle(),
2676                self.project.clone(),
2677                self.pane_history_timestamp.clone(),
2678                None,
2679                NewFile.boxed_clone(),
2680                window,
2681                cx,
2682            );
2683            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
2684            pane
2685        });
2686        cx.subscribe_in(&pane, window, Self::handle_pane_event)
2687            .detach();
2688        self.panes.push(pane.clone());
2689
2690        window.focus(&pane.focus_handle(cx));
2691
2692        cx.emit(Event::PaneAdded(pane.clone()));
2693        pane
2694    }
2695
2696    pub fn add_item_to_center(
2697        &mut self,
2698        item: Box<dyn ItemHandle>,
2699        window: &mut Window,
2700        cx: &mut Context<Self>,
2701    ) -> bool {
2702        if let Some(center_pane) = self.last_active_center_pane.clone() {
2703            if let Some(center_pane) = center_pane.upgrade() {
2704                center_pane.update(cx, |pane, cx| {
2705                    pane.add_item(item, true, true, None, window, cx)
2706                });
2707                true
2708            } else {
2709                false
2710            }
2711        } else {
2712            false
2713        }
2714    }
2715
2716    pub fn add_item_to_active_pane(
2717        &mut self,
2718        item: Box<dyn ItemHandle>,
2719        destination_index: Option<usize>,
2720        focus_item: bool,
2721        window: &mut Window,
2722        cx: &mut App,
2723    ) {
2724        self.add_item(
2725            self.active_pane.clone(),
2726            item,
2727            destination_index,
2728            false,
2729            focus_item,
2730            window,
2731            cx,
2732        )
2733    }
2734
2735    #[allow(clippy::too_many_arguments)]
2736    pub fn add_item(
2737        &mut self,
2738        pane: Entity<Pane>,
2739        item: Box<dyn ItemHandle>,
2740        destination_index: Option<usize>,
2741        activate_pane: bool,
2742        focus_item: bool,
2743        window: &mut Window,
2744        cx: &mut App,
2745    ) {
2746        if let Some(text) = item.telemetry_event_text(cx) {
2747            telemetry::event!(text);
2748        }
2749
2750        pane.update(cx, |pane, cx| {
2751            pane.add_item(
2752                item,
2753                activate_pane,
2754                focus_item,
2755                destination_index,
2756                window,
2757                cx,
2758            )
2759        });
2760    }
2761
2762    pub fn split_item(
2763        &mut self,
2764        split_direction: SplitDirection,
2765        item: Box<dyn ItemHandle>,
2766        window: &mut Window,
2767        cx: &mut Context<Self>,
2768    ) {
2769        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
2770        self.add_item(new_pane, item, None, true, true, window, cx);
2771    }
2772
2773    pub fn open_abs_path(
2774        &mut self,
2775        abs_path: PathBuf,
2776        options: OpenOptions,
2777        window: &mut Window,
2778        cx: &mut Context<Self>,
2779    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
2780        cx.spawn_in(window, |workspace, mut cx| async move {
2781            let open_paths_task_result = workspace
2782                .update_in(&mut cx, |workspace, window, cx| {
2783                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
2784                })
2785                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
2786                .await;
2787            anyhow::ensure!(
2788                open_paths_task_result.len() == 1,
2789                "open abs path {abs_path:?} task returned incorrect number of results"
2790            );
2791            match open_paths_task_result
2792                .into_iter()
2793                .next()
2794                .expect("ensured single task result")
2795            {
2796                Some(open_result) => {
2797                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
2798                }
2799                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
2800            }
2801        })
2802    }
2803
2804    pub fn split_abs_path(
2805        &mut self,
2806        abs_path: PathBuf,
2807        visible: bool,
2808        window: &mut Window,
2809        cx: &mut Context<Self>,
2810    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
2811        let project_path_task =
2812            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
2813        cx.spawn_in(window, |this, mut cx| async move {
2814            let (_, path) = project_path_task.await?;
2815            this.update_in(&mut cx, |this, window, cx| {
2816                this.split_path(path, window, cx)
2817            })?
2818            .await
2819        })
2820    }
2821
2822    pub fn open_path(
2823        &mut self,
2824        path: impl Into<ProjectPath>,
2825        pane: Option<WeakEntity<Pane>>,
2826        focus_item: bool,
2827        window: &mut Window,
2828        cx: &mut App,
2829    ) -> Task<Result<Box<dyn ItemHandle>, anyhow::Error>> {
2830        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
2831    }
2832
2833    #[allow(clippy::too_many_arguments)]
2834    pub fn open_path_preview(
2835        &mut self,
2836        path: impl Into<ProjectPath>,
2837        pane: Option<WeakEntity<Pane>>,
2838        focus_item: bool,
2839        allow_preview: bool,
2840        activate: bool,
2841        window: &mut Window,
2842        cx: &mut App,
2843    ) -> Task<Result<Box<dyn ItemHandle>, anyhow::Error>> {
2844        let pane = pane.unwrap_or_else(|| {
2845            self.last_active_center_pane.clone().unwrap_or_else(|| {
2846                self.panes
2847                    .first()
2848                    .expect("There must be an active pane")
2849                    .downgrade()
2850            })
2851        });
2852
2853        let task = self.load_path(path.into(), window, cx);
2854        window.spawn(cx, move |mut cx| async move {
2855            let (project_entry_id, build_item) = task.await?;
2856            let result = pane.update_in(&mut cx, |pane, window, cx| {
2857                let result = pane.open_item(
2858                    project_entry_id,
2859                    focus_item,
2860                    allow_preview,
2861                    activate,
2862                    None,
2863                    window,
2864                    cx,
2865                    build_item,
2866                );
2867
2868                result
2869            });
2870            result
2871        })
2872    }
2873
2874    pub fn split_path(
2875        &mut self,
2876        path: impl Into<ProjectPath>,
2877        window: &mut Window,
2878        cx: &mut Context<Self>,
2879    ) -> Task<Result<Box<dyn ItemHandle>, anyhow::Error>> {
2880        self.split_path_preview(path, false, None, window, cx)
2881    }
2882
2883    pub fn split_path_preview(
2884        &mut self,
2885        path: impl Into<ProjectPath>,
2886        allow_preview: bool,
2887        split_direction: Option<SplitDirection>,
2888        window: &mut Window,
2889        cx: &mut Context<Self>,
2890    ) -> Task<Result<Box<dyn ItemHandle>, anyhow::Error>> {
2891        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
2892            self.panes
2893                .first()
2894                .expect("There must be an active pane")
2895                .downgrade()
2896        });
2897
2898        if let Member::Pane(center_pane) = &self.center.root {
2899            if center_pane.read(cx).items_len() == 0 {
2900                return self.open_path(path, Some(pane), true, window, cx);
2901            }
2902        }
2903
2904        let task = self.load_path(path.into(), window, cx);
2905        cx.spawn_in(window, |this, mut cx| async move {
2906            let (project_entry_id, build_item) = task.await?;
2907            this.update_in(&mut cx, move |this, window, cx| -> Option<_> {
2908                let pane = pane.upgrade()?;
2909                let new_pane = this.split_pane(
2910                    pane,
2911                    split_direction.unwrap_or(SplitDirection::Right),
2912                    window,
2913                    cx,
2914                );
2915                new_pane.update(cx, |new_pane, cx| {
2916                    Some(new_pane.open_item(
2917                        project_entry_id,
2918                        true,
2919                        allow_preview,
2920                        true,
2921                        None,
2922                        window,
2923                        cx,
2924                        build_item,
2925                    ))
2926                })
2927            })
2928            .map(|option| option.ok_or_else(|| anyhow!("pane was dropped")))?
2929        })
2930    }
2931
2932    fn load_path(
2933        &mut self,
2934        path: ProjectPath,
2935        window: &mut Window,
2936        cx: &mut App,
2937    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
2938        let project = self.project().clone();
2939        let project_item_builders = cx.default_global::<ProjectItemOpeners>().clone();
2940        let Some(open_project_item) = project_item_builders
2941            .iter()
2942            .rev()
2943            .find_map(|open_project_item| open_project_item(&project, &path, window, cx))
2944        else {
2945            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
2946        };
2947        open_project_item
2948    }
2949
2950    pub fn find_project_item<T>(
2951        &self,
2952        pane: &Entity<Pane>,
2953        project_item: &Entity<T::Item>,
2954        cx: &App,
2955    ) -> Option<Entity<T>>
2956    where
2957        T: ProjectItem,
2958    {
2959        use project::ProjectItem as _;
2960        let project_item = project_item.read(cx);
2961        let entry_id = project_item.entry_id(cx);
2962        let project_path = project_item.project_path(cx);
2963
2964        let mut item = None;
2965        if let Some(entry_id) = entry_id {
2966            item = pane.read(cx).item_for_entry(entry_id, cx);
2967        }
2968        if item.is_none() {
2969            if let Some(project_path) = project_path {
2970                item = pane.read(cx).item_for_path(project_path, cx);
2971            }
2972        }
2973
2974        item.and_then(|item| item.downcast::<T>())
2975    }
2976
2977    pub fn is_project_item_open<T>(
2978        &self,
2979        pane: &Entity<Pane>,
2980        project_item: &Entity<T::Item>,
2981        cx: &App,
2982    ) -> bool
2983    where
2984        T: ProjectItem,
2985    {
2986        self.find_project_item::<T>(pane, project_item, cx)
2987            .is_some()
2988    }
2989
2990    pub fn open_project_item<T>(
2991        &mut self,
2992        pane: Entity<Pane>,
2993        project_item: Entity<T::Item>,
2994        activate_pane: bool,
2995        focus_item: bool,
2996        window: &mut Window,
2997        cx: &mut Context<Self>,
2998    ) -> Entity<T>
2999    where
3000        T: ProjectItem,
3001    {
3002        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
3003            self.activate_item(&item, activate_pane, focus_item, window, cx);
3004            return item;
3005        }
3006
3007        let item =
3008            cx.new(|cx| T::for_project_item(self.project().clone(), project_item, window, cx));
3009        let item_id = item.item_id();
3010        let mut destination_index = None;
3011        pane.update(cx, |pane, cx| {
3012            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
3013                if let Some(preview_item_id) = pane.preview_item_id() {
3014                    if preview_item_id != item_id {
3015                        destination_index = pane.close_current_preview_item(window, cx);
3016                    }
3017                }
3018            }
3019            pane.set_preview_item_id(Some(item.item_id()), cx)
3020        });
3021
3022        self.add_item(
3023            pane,
3024            Box::new(item.clone()),
3025            destination_index,
3026            activate_pane,
3027            focus_item,
3028            window,
3029            cx,
3030        );
3031        item
3032    }
3033
3034    pub fn open_shared_screen(
3035        &mut self,
3036        peer_id: PeerId,
3037        window: &mut Window,
3038        cx: &mut Context<Self>,
3039    ) {
3040        if let Some(shared_screen) =
3041            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
3042        {
3043            self.active_pane.update(cx, |pane, cx| {
3044                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
3045            });
3046        }
3047    }
3048
3049    pub fn activate_item(
3050        &mut self,
3051        item: &dyn ItemHandle,
3052        activate_pane: bool,
3053        focus_item: bool,
3054        window: &mut Window,
3055        cx: &mut App,
3056    ) -> bool {
3057        let result = self.panes.iter().find_map(|pane| {
3058            pane.read(cx)
3059                .index_for_item(item)
3060                .map(|ix| (pane.clone(), ix))
3061        });
3062        if let Some((pane, ix)) = result {
3063            pane.update(cx, |pane, cx| {
3064                pane.activate_item(ix, activate_pane, focus_item, window, cx)
3065            });
3066            true
3067        } else {
3068            false
3069        }
3070    }
3071
3072    fn activate_pane_at_index(
3073        &mut self,
3074        action: &ActivatePane,
3075        window: &mut Window,
3076        cx: &mut Context<Self>,
3077    ) {
3078        let panes = self.center.panes();
3079        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
3080            window.focus(&pane.focus_handle(cx));
3081        } else {
3082            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx);
3083        }
3084    }
3085
3086    fn move_item_to_pane_at_index(
3087        &mut self,
3088        action: &MoveItemToPane,
3089        window: &mut Window,
3090        cx: &mut Context<Self>,
3091    ) {
3092        let Some(&target_pane) = self.center.panes().get(action.destination) else {
3093            return;
3094        };
3095        move_active_item(
3096            &self.active_pane,
3097            target_pane,
3098            action.focus,
3099            true,
3100            window,
3101            cx,
3102        );
3103    }
3104
3105    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
3106        let panes = self.center.panes();
3107        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
3108            let next_ix = (ix + 1) % panes.len();
3109            let next_pane = panes[next_ix].clone();
3110            window.focus(&next_pane.focus_handle(cx));
3111        }
3112    }
3113
3114    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
3115        let panes = self.center.panes();
3116        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
3117            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
3118            let prev_pane = panes[prev_ix].clone();
3119            window.focus(&prev_pane.focus_handle(cx));
3120        }
3121    }
3122
3123    pub fn activate_pane_in_direction(
3124        &mut self,
3125        direction: SplitDirection,
3126        window: &mut Window,
3127        cx: &mut App,
3128    ) {
3129        use ActivateInDirectionTarget as Target;
3130        enum Origin {
3131            LeftDock,
3132            RightDock,
3133            BottomDock,
3134            Center,
3135        }
3136
3137        let origin: Origin = [
3138            (&self.left_dock, Origin::LeftDock),
3139            (&self.right_dock, Origin::RightDock),
3140            (&self.bottom_dock, Origin::BottomDock),
3141        ]
3142        .into_iter()
3143        .find_map(|(dock, origin)| {
3144            if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
3145                Some(origin)
3146            } else {
3147                None
3148            }
3149        })
3150        .unwrap_or(Origin::Center);
3151
3152        let get_last_active_pane = || {
3153            let pane = self
3154                .last_active_center_pane
3155                .clone()
3156                .unwrap_or_else(|| {
3157                    self.panes
3158                        .first()
3159                        .expect("There must be an active pane")
3160                        .downgrade()
3161                })
3162                .upgrade()?;
3163            (pane.read(cx).items_len() != 0).then_some(pane)
3164        };
3165
3166        let try_dock =
3167            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
3168
3169        let target = match (origin, direction) {
3170            // We're in the center, so we first try to go to a different pane,
3171            // otherwise try to go to a dock.
3172            (Origin::Center, direction) => {
3173                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
3174                    Some(Target::Pane(pane))
3175                } else {
3176                    match direction {
3177                        SplitDirection::Up => None,
3178                        SplitDirection::Down => try_dock(&self.bottom_dock),
3179                        SplitDirection::Left => try_dock(&self.left_dock),
3180                        SplitDirection::Right => try_dock(&self.right_dock),
3181                    }
3182                }
3183            }
3184
3185            (Origin::LeftDock, SplitDirection::Right) => {
3186                if let Some(last_active_pane) = get_last_active_pane() {
3187                    Some(Target::Pane(last_active_pane))
3188                } else {
3189                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
3190                }
3191            }
3192
3193            (Origin::LeftDock, SplitDirection::Down)
3194            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
3195
3196            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
3197            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
3198            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
3199
3200            (Origin::RightDock, SplitDirection::Left) => {
3201                if let Some(last_active_pane) = get_last_active_pane() {
3202                    Some(Target::Pane(last_active_pane))
3203                } else {
3204                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
3205                }
3206            }
3207
3208            _ => None,
3209        };
3210
3211        match target {
3212            Some(ActivateInDirectionTarget::Pane(pane)) => {
3213                window.focus(&pane.focus_handle(cx));
3214            }
3215            Some(ActivateInDirectionTarget::Dock(dock)) => {
3216                // Defer this to avoid a panic when the dock's active panel is already on the stack.
3217                window.defer(cx, move |window, cx| {
3218                    let dock = dock.read(cx);
3219                    if let Some(panel) = dock.active_panel() {
3220                        panel.panel_focus_handle(cx).focus(window);
3221                    } else {
3222                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
3223                    }
3224                })
3225            }
3226            None => {}
3227        }
3228    }
3229
3230    pub fn move_item_to_pane_in_direction(
3231        &mut self,
3232        action: &MoveItemToPaneInDirection,
3233        window: &mut Window,
3234        cx: &mut App,
3235    ) {
3236        if let Some(destination) = self.find_pane_in_direction(action.direction, cx) {
3237            move_active_item(
3238                &self.active_pane,
3239                &destination,
3240                action.focus,
3241                true,
3242                window,
3243                cx,
3244            );
3245        }
3246    }
3247
3248    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
3249        self.center.bounding_box_for_pane(pane)
3250    }
3251
3252    pub fn find_pane_in_direction(
3253        &mut self,
3254        direction: SplitDirection,
3255        cx: &App,
3256    ) -> Option<Entity<Pane>> {
3257        self.center
3258            .find_pane_in_direction(&self.active_pane, direction, cx)
3259            .cloned()
3260    }
3261
3262    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
3263        if let Some(to) = self.find_pane_in_direction(direction, cx) {
3264            self.center.swap(&self.active_pane, &to);
3265            cx.notify();
3266        }
3267    }
3268
3269    pub fn resize_pane(
3270        &mut self,
3271        axis: gpui::Axis,
3272        amount: Pixels,
3273        window: &mut Window,
3274        cx: &mut Context<Self>,
3275    ) {
3276        let docks = self.all_docks();
3277        let active_dock = docks
3278            .into_iter()
3279            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
3280
3281        if let Some(dock) = active_dock {
3282            let Some(panel_size) = dock.read(cx).active_panel_size(window, cx) else {
3283                return;
3284            };
3285            match dock.read(cx).position() {
3286                DockPosition::Left => resize_left_dock(panel_size + amount, self, window, cx),
3287                DockPosition::Bottom => resize_bottom_dock(panel_size + amount, self, window, cx),
3288                DockPosition::Right => resize_right_dock(panel_size + amount, self, window, cx),
3289            }
3290        } else {
3291            self.center
3292                .resize(&self.active_pane, axis, amount, &self.bounds);
3293        }
3294        cx.notify();
3295    }
3296
3297    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
3298        self.center.reset_pane_sizes();
3299        cx.notify();
3300    }
3301
3302    fn handle_pane_focused(
3303        &mut self,
3304        pane: Entity<Pane>,
3305        window: &mut Window,
3306        cx: &mut Context<Self>,
3307    ) {
3308        // This is explicitly hoisted out of the following check for pane identity as
3309        // terminal panel panes are not registered as a center panes.
3310        self.status_bar.update(cx, |status_bar, cx| {
3311            status_bar.set_active_pane(&pane, window, cx);
3312        });
3313        if self.active_pane != pane {
3314            self.set_active_pane(&pane, window, cx);
3315        }
3316
3317        if self.last_active_center_pane.is_none() {
3318            self.last_active_center_pane = Some(pane.downgrade());
3319        }
3320
3321        self.dismiss_zoomed_items_to_reveal(None, window, cx);
3322        if pane.read(cx).is_zoomed() {
3323            self.zoomed = Some(pane.downgrade().into());
3324        } else {
3325            self.zoomed = None;
3326        }
3327        self.zoomed_position = None;
3328        cx.emit(Event::ZoomChanged);
3329        self.update_active_view_for_followers(window, cx);
3330        pane.update(cx, |pane, _| {
3331            pane.track_alternate_file_items();
3332        });
3333
3334        cx.notify();
3335    }
3336
3337    fn set_active_pane(
3338        &mut self,
3339        pane: &Entity<Pane>,
3340        window: &mut Window,
3341        cx: &mut Context<Self>,
3342    ) {
3343        self.active_pane = pane.clone();
3344        self.active_item_path_changed(window, cx);
3345        self.last_active_center_pane = Some(pane.downgrade());
3346    }
3347
3348    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
3349        self.update_active_view_for_followers(window, cx);
3350    }
3351
3352    fn handle_pane_event(
3353        &mut self,
3354        pane: &Entity<Pane>,
3355        event: &pane::Event,
3356        window: &mut Window,
3357        cx: &mut Context<Self>,
3358    ) {
3359        let mut serialize_workspace = true;
3360        match event {
3361            pane::Event::AddItem { item } => {
3362                item.added_to_pane(self, pane.clone(), window, cx);
3363                cx.emit(Event::ItemAdded {
3364                    item: item.boxed_clone(),
3365                });
3366            }
3367            pane::Event::Split(direction) => {
3368                self.split_and_clone(pane.clone(), *direction, window, cx);
3369            }
3370            pane::Event::JoinIntoNext => {
3371                self.join_pane_into_next(pane.clone(), window, cx);
3372            }
3373            pane::Event::JoinAll => {
3374                self.join_all_panes(window, cx);
3375            }
3376            pane::Event::Remove { focus_on_pane } => {
3377                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
3378            }
3379            pane::Event::ActivateItem {
3380                local,
3381                focus_changed,
3382            } => {
3383                cx.on_next_frame(window, |_, window, _| {
3384                    window.invalidate_character_coordinates();
3385                });
3386
3387                pane.update(cx, |pane, _| {
3388                    pane.track_alternate_file_items();
3389                });
3390                if *local {
3391                    self.unfollow_in_pane(&pane, window, cx);
3392                }
3393                if pane == self.active_pane() {
3394                    self.active_item_path_changed(window, cx);
3395                    self.update_active_view_for_followers(window, cx);
3396                }
3397                serialize_workspace = *focus_changed || pane != self.active_pane();
3398            }
3399            pane::Event::UserSavedItem { item, save_intent } => {
3400                cx.emit(Event::UserSavedItem {
3401                    pane: pane.downgrade(),
3402                    item: item.boxed_clone(),
3403                    save_intent: *save_intent,
3404                });
3405                serialize_workspace = false;
3406            }
3407            pane::Event::ChangeItemTitle => {
3408                if *pane == self.active_pane {
3409                    self.active_item_path_changed(window, cx);
3410                }
3411                serialize_workspace = false;
3412            }
3413            pane::Event::RemoveItem { .. } => {}
3414            pane::Event::RemovedItem { item_id } => {
3415                cx.emit(Event::ActiveItemChanged);
3416                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(*item_id) {
3417                    if entry.get().entity_id() == pane.entity_id() {
3418                        entry.remove();
3419                    }
3420                }
3421            }
3422            pane::Event::Focus => {
3423                cx.on_next_frame(window, |_, window, _| {
3424                    window.invalidate_character_coordinates();
3425                });
3426                self.handle_pane_focused(pane.clone(), window, cx);
3427            }
3428            pane::Event::ZoomIn => {
3429                if *pane == self.active_pane {
3430                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
3431                    if pane.read(cx).has_focus(window, cx) {
3432                        self.zoomed = Some(pane.downgrade().into());
3433                        self.zoomed_position = None;
3434                        cx.emit(Event::ZoomChanged);
3435                    }
3436                    cx.notify();
3437                }
3438            }
3439            pane::Event::ZoomOut => {
3440                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
3441                if self.zoomed_position.is_none() {
3442                    self.zoomed = None;
3443                    cx.emit(Event::ZoomChanged);
3444                }
3445                cx.notify();
3446            }
3447        }
3448
3449        if serialize_workspace {
3450            self.serialize_workspace(window, cx);
3451        }
3452    }
3453
3454    pub fn unfollow_in_pane(
3455        &mut self,
3456        pane: &Entity<Pane>,
3457        window: &mut Window,
3458        cx: &mut Context<Workspace>,
3459    ) -> Option<PeerId> {
3460        let leader_id = self.leader_for_pane(pane)?;
3461        self.unfollow(leader_id, window, cx);
3462        Some(leader_id)
3463    }
3464
3465    pub fn split_pane(
3466        &mut self,
3467        pane_to_split: Entity<Pane>,
3468        split_direction: SplitDirection,
3469        window: &mut Window,
3470        cx: &mut Context<Self>,
3471    ) -> Entity<Pane> {
3472        let new_pane = self.add_pane(window, cx);
3473        self.center
3474            .split(&pane_to_split, &new_pane, split_direction)
3475            .unwrap();
3476        cx.notify();
3477        new_pane
3478    }
3479
3480    pub fn split_and_clone(
3481        &mut self,
3482        pane: Entity<Pane>,
3483        direction: SplitDirection,
3484        window: &mut Window,
3485        cx: &mut Context<Self>,
3486    ) -> Option<Entity<Pane>> {
3487        let item = pane.read(cx).active_item()?;
3488        let maybe_pane_handle =
3489            if let Some(clone) = item.clone_on_split(self.database_id(), window, cx) {
3490                let new_pane = self.add_pane(window, cx);
3491                new_pane.update(cx, |pane, cx| {
3492                    pane.add_item(clone, true, true, None, window, cx)
3493                });
3494                self.center.split(&pane, &new_pane, direction).unwrap();
3495                Some(new_pane)
3496            } else {
3497                None
3498            };
3499        cx.notify();
3500        maybe_pane_handle
3501    }
3502
3503    pub fn split_pane_with_item(
3504        &mut self,
3505        pane_to_split: WeakEntity<Pane>,
3506        split_direction: SplitDirection,
3507        from: WeakEntity<Pane>,
3508        item_id_to_move: EntityId,
3509        window: &mut Window,
3510        cx: &mut Context<Self>,
3511    ) {
3512        let Some(pane_to_split) = pane_to_split.upgrade() else {
3513            return;
3514        };
3515        let Some(from) = from.upgrade() else {
3516            return;
3517        };
3518
3519        let new_pane = self.add_pane(window, cx);
3520        move_item(&from, &new_pane, item_id_to_move, 0, window, cx);
3521        self.center
3522            .split(&pane_to_split, &new_pane, split_direction)
3523            .unwrap();
3524        cx.notify();
3525    }
3526
3527    pub fn split_pane_with_project_entry(
3528        &mut self,
3529        pane_to_split: WeakEntity<Pane>,
3530        split_direction: SplitDirection,
3531        project_entry: ProjectEntryId,
3532        window: &mut Window,
3533        cx: &mut Context<Self>,
3534    ) -> Option<Task<Result<()>>> {
3535        let pane_to_split = pane_to_split.upgrade()?;
3536        let new_pane = self.add_pane(window, cx);
3537        self.center
3538            .split(&pane_to_split, &new_pane, split_direction)
3539            .unwrap();
3540
3541        let path = self.project.read(cx).path_for_entry(project_entry, cx)?;
3542        let task = self.open_path(path, Some(new_pane.downgrade()), true, window, cx);
3543        Some(cx.foreground_executor().spawn(async move {
3544            task.await?;
3545            Ok(())
3546        }))
3547    }
3548
3549    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
3550        let active_item = self.active_pane.read(cx).active_item();
3551        for pane in &self.panes {
3552            join_pane_into_active(&self.active_pane, pane, window, cx);
3553        }
3554        if let Some(active_item) = active_item {
3555            self.activate_item(active_item.as_ref(), true, true, window, cx);
3556        }
3557        cx.notify();
3558    }
3559
3560    pub fn join_pane_into_next(
3561        &mut self,
3562        pane: Entity<Pane>,
3563        window: &mut Window,
3564        cx: &mut Context<Self>,
3565    ) {
3566        let next_pane = self
3567            .find_pane_in_direction(SplitDirection::Right, cx)
3568            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
3569            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
3570            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
3571        let Some(next_pane) = next_pane else {
3572            return;
3573        };
3574        move_all_items(&pane, &next_pane, window, cx);
3575        cx.notify();
3576    }
3577
3578    fn remove_pane(
3579        &mut self,
3580        pane: Entity<Pane>,
3581        focus_on: Option<Entity<Pane>>,
3582        window: &mut Window,
3583        cx: &mut Context<Self>,
3584    ) {
3585        if self.center.remove(&pane).unwrap() {
3586            self.force_remove_pane(&pane, &focus_on, window, cx);
3587            self.unfollow_in_pane(&pane, window, cx);
3588            self.last_leaders_by_pane.remove(&pane.downgrade());
3589            for removed_item in pane.read(cx).items() {
3590                self.panes_by_item.remove(&removed_item.item_id());
3591            }
3592
3593            cx.notify();
3594        } else {
3595            self.active_item_path_changed(window, cx);
3596        }
3597        cx.emit(Event::PaneRemoved);
3598    }
3599
3600    pub fn panes(&self) -> &[Entity<Pane>] {
3601        &self.panes
3602    }
3603
3604    pub fn active_pane(&self) -> &Entity<Pane> {
3605        &self.active_pane
3606    }
3607
3608    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
3609        for dock in self.all_docks() {
3610            if dock.focus_handle(cx).contains_focused(window, cx) {
3611                if let Some(pane) = dock
3612                    .read(cx)
3613                    .active_panel()
3614                    .and_then(|panel| panel.pane(cx))
3615                {
3616                    return pane;
3617                }
3618            }
3619        }
3620        self.active_pane().clone()
3621    }
3622
3623    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
3624        self.find_pane_in_direction(SplitDirection::Right, cx)
3625            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
3626            .unwrap_or_else(|| {
3627                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
3628            })
3629            .clone()
3630    }
3631
3632    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
3633        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
3634        weak_pane.upgrade()
3635    }
3636
3637    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
3638        self.follower_states.retain(|leader_id, state| {
3639            if *leader_id == peer_id {
3640                for item in state.items_by_leader_view_id.values() {
3641                    item.view.set_leader_peer_id(None, window, cx);
3642                }
3643                false
3644            } else {
3645                true
3646            }
3647        });
3648        cx.notify();
3649    }
3650
3651    pub fn start_following(
3652        &mut self,
3653        leader_id: PeerId,
3654        window: &mut Window,
3655        cx: &mut Context<Self>,
3656    ) -> Option<Task<Result<()>>> {
3657        let pane = self.active_pane().clone();
3658
3659        self.last_leaders_by_pane
3660            .insert(pane.downgrade(), leader_id);
3661        self.unfollow(leader_id, window, cx);
3662        self.unfollow_in_pane(&pane, window, cx);
3663        self.follower_states.insert(
3664            leader_id,
3665            FollowerState {
3666                center_pane: pane.clone(),
3667                dock_pane: None,
3668                active_view_id: None,
3669                items_by_leader_view_id: Default::default(),
3670            },
3671        );
3672        cx.notify();
3673
3674        let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
3675        let project_id = self.project.read(cx).remote_id();
3676        let request = self.app_state.client.request(proto::Follow {
3677            room_id,
3678            project_id,
3679            leader_id: Some(leader_id),
3680        });
3681
3682        Some(cx.spawn_in(window, |this, mut cx| async move {
3683            let response = request.await?;
3684            this.update(&mut cx, |this, _| {
3685                let state = this
3686                    .follower_states
3687                    .get_mut(&leader_id)
3688                    .ok_or_else(|| anyhow!("following interrupted"))?;
3689                state.active_view_id = response
3690                    .active_view
3691                    .as_ref()
3692                    .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
3693                Ok::<_, anyhow::Error>(())
3694            })??;
3695            if let Some(view) = response.active_view {
3696                Self::add_view_from_leader(this.clone(), leader_id, &view, &mut cx).await?;
3697            }
3698            this.update_in(&mut cx, |this, window, cx| {
3699                this.leader_updated(leader_id, window, cx)
3700            })?;
3701            Ok(())
3702        }))
3703    }
3704
3705    pub fn follow_next_collaborator(
3706        &mut self,
3707        _: &FollowNextCollaborator,
3708        window: &mut Window,
3709        cx: &mut Context<Self>,
3710    ) {
3711        let collaborators = self.project.read(cx).collaborators();
3712        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
3713            let mut collaborators = collaborators.keys().copied();
3714            for peer_id in collaborators.by_ref() {
3715                if peer_id == leader_id {
3716                    break;
3717                }
3718            }
3719            collaborators.next()
3720        } else if let Some(last_leader_id) =
3721            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
3722        {
3723            if collaborators.contains_key(last_leader_id) {
3724                Some(*last_leader_id)
3725            } else {
3726                None
3727            }
3728        } else {
3729            None
3730        };
3731
3732        let pane = self.active_pane.clone();
3733        let Some(leader_id) = next_leader_id.or_else(|| collaborators.keys().copied().next())
3734        else {
3735            return;
3736        };
3737        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
3738            return;
3739        }
3740        if let Some(task) = self.start_following(leader_id, window, cx) {
3741            task.detach_and_log_err(cx)
3742        }
3743    }
3744
3745    pub fn follow(&mut self, leader_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
3746        let Some(room) = ActiveCall::global(cx).read(cx).room() else {
3747            return;
3748        };
3749        let room = room.read(cx);
3750        let Some(remote_participant) = room.remote_participant_for_peer_id(leader_id) else {
3751            return;
3752        };
3753
3754        let project = self.project.read(cx);
3755
3756        let other_project_id = match remote_participant.location {
3757            call::ParticipantLocation::External => None,
3758            call::ParticipantLocation::UnsharedProject => None,
3759            call::ParticipantLocation::SharedProject { project_id } => {
3760                if Some(project_id) == project.remote_id() {
3761                    None
3762                } else {
3763                    Some(project_id)
3764                }
3765            }
3766        };
3767
3768        // if they are active in another project, follow there.
3769        if let Some(project_id) = other_project_id {
3770            let app_state = self.app_state.clone();
3771            crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
3772                .detach_and_log_err(cx);
3773        }
3774
3775        // if you're already following, find the right pane and focus it.
3776        if let Some(follower_state) = self.follower_states.get(&leader_id) {
3777            window.focus(&follower_state.pane().focus_handle(cx));
3778
3779            return;
3780        }
3781
3782        // Otherwise, follow.
3783        if let Some(task) = self.start_following(leader_id, window, cx) {
3784            task.detach_and_log_err(cx)
3785        }
3786    }
3787
3788    pub fn unfollow(
3789        &mut self,
3790        leader_id: PeerId,
3791        window: &mut Window,
3792        cx: &mut Context<Self>,
3793    ) -> Option<()> {
3794        cx.notify();
3795        let state = self.follower_states.remove(&leader_id)?;
3796        for (_, item) in state.items_by_leader_view_id {
3797            item.view.set_leader_peer_id(None, window, cx);
3798        }
3799
3800        let project_id = self.project.read(cx).remote_id();
3801        let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
3802        self.app_state
3803            .client
3804            .send(proto::Unfollow {
3805                room_id,
3806                project_id,
3807                leader_id: Some(leader_id),
3808            })
3809            .log_err();
3810
3811        Some(())
3812    }
3813
3814    pub fn is_being_followed(&self, peer_id: PeerId) -> bool {
3815        self.follower_states.contains_key(&peer_id)
3816    }
3817
3818    fn active_item_path_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
3819        cx.emit(Event::ActiveItemChanged);
3820        let active_entry = self.active_project_path(cx);
3821        self.project
3822            .update(cx, |project, cx| project.set_active_path(active_entry, cx));
3823
3824        self.update_window_title(window, cx);
3825    }
3826
3827    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
3828        let project = self.project().read(cx);
3829        let mut title = String::new();
3830
3831        for (i, name) in project.worktree_root_names(cx).enumerate() {
3832            if i > 0 {
3833                title.push_str(", ");
3834            }
3835            title.push_str(name);
3836        }
3837
3838        if title.is_empty() {
3839            title = "empty project".to_string();
3840        }
3841
3842        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
3843            let filename = path
3844                .path
3845                .file_name()
3846                .map(|s| s.to_string_lossy())
3847                .or_else(|| {
3848                    Some(Cow::Borrowed(
3849                        project
3850                            .worktree_for_id(path.worktree_id, cx)?
3851                            .read(cx)
3852                            .root_name(),
3853                    ))
3854                });
3855
3856            if let Some(filename) = filename {
3857                title.push_str("");
3858                title.push_str(filename.as_ref());
3859            }
3860        }
3861
3862        if project.is_via_collab() {
3863            title.push_str("");
3864        } else if project.is_shared() {
3865            title.push_str("");
3866        }
3867
3868        window.set_window_title(&title);
3869    }
3870
3871    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
3872        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
3873        if is_edited != self.window_edited {
3874            self.window_edited = is_edited;
3875            window.set_window_edited(self.window_edited)
3876        }
3877    }
3878
3879    fn update_item_dirty_state(
3880        &mut self,
3881        item: &dyn ItemHandle,
3882        window: &mut Window,
3883        cx: &mut App,
3884    ) {
3885        let is_dirty = item.is_dirty(cx);
3886        let item_id = item.item_id();
3887        let was_dirty = self.dirty_items.contains_key(&item_id);
3888        if is_dirty == was_dirty {
3889            return;
3890        }
3891        if was_dirty {
3892            self.dirty_items.remove(&item_id);
3893            self.update_window_edited(window, cx);
3894            return;
3895        }
3896        if let Some(window_handle) = window.window_handle().downcast::<Self>() {
3897            let s = item.on_release(
3898                cx,
3899                Box::new(move |cx| {
3900                    window_handle
3901                        .update(cx, |this, window, cx| {
3902                            this.dirty_items.remove(&item_id);
3903                            this.update_window_edited(window, cx)
3904                        })
3905                        .ok();
3906                }),
3907            );
3908            self.dirty_items.insert(item_id, s);
3909            self.update_window_edited(window, cx);
3910        }
3911    }
3912
3913    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
3914        if self.notifications.is_empty() {
3915            None
3916        } else {
3917            Some(
3918                div()
3919                    .absolute()
3920                    .right_3()
3921                    .bottom_3()
3922                    .w_112()
3923                    .h_full()
3924                    .flex()
3925                    .flex_col()
3926                    .justify_end()
3927                    .gap_2()
3928                    .children(
3929                        self.notifications
3930                            .iter()
3931                            .map(|(_, notification)| notification.clone().into_any()),
3932                    ),
3933            )
3934        }
3935    }
3936
3937    // RPC handlers
3938
3939    fn active_view_for_follower(
3940        &self,
3941        follower_project_id: Option<u64>,
3942        window: &mut Window,
3943        cx: &mut Context<Self>,
3944    ) -> Option<proto::View> {
3945        let (item, panel_id) = self.active_item_for_followers(window, cx);
3946        let item = item?;
3947        let leader_id = self
3948            .pane_for(&*item)
3949            .and_then(|pane| self.leader_for_pane(&pane));
3950
3951        let item_handle = item.to_followable_item_handle(cx)?;
3952        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
3953        let variant = item_handle.to_state_proto(window, cx)?;
3954
3955        if item_handle.is_project_item(window, cx)
3956            && (follower_project_id.is_none()
3957                || follower_project_id != self.project.read(cx).remote_id())
3958        {
3959            return None;
3960        }
3961
3962        Some(proto::View {
3963            id: Some(id.to_proto()),
3964            leader_id,
3965            variant: Some(variant),
3966            panel_id: panel_id.map(|id| id as i32),
3967        })
3968    }
3969
3970    fn handle_follow(
3971        &mut self,
3972        follower_project_id: Option<u64>,
3973        window: &mut Window,
3974        cx: &mut Context<Self>,
3975    ) -> proto::FollowResponse {
3976        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
3977
3978        cx.notify();
3979        proto::FollowResponse {
3980            // TODO: Remove after version 0.145.x stabilizes.
3981            active_view_id: active_view.as_ref().and_then(|view| view.id.clone()),
3982            views: active_view.iter().cloned().collect(),
3983            active_view,
3984        }
3985    }
3986
3987    fn handle_update_followers(
3988        &mut self,
3989        leader_id: PeerId,
3990        message: proto::UpdateFollowers,
3991        _window: &mut Window,
3992        _cx: &mut Context<Self>,
3993    ) {
3994        self.leader_updates_tx
3995            .unbounded_send((leader_id, message))
3996            .ok();
3997    }
3998
3999    async fn process_leader_update(
4000        this: &WeakEntity<Self>,
4001        leader_id: PeerId,
4002        update: proto::UpdateFollowers,
4003        cx: &mut AsyncWindowContext,
4004    ) -> Result<()> {
4005        match update.variant.ok_or_else(|| anyhow!("invalid update"))? {
4006            proto::update_followers::Variant::CreateView(view) => {
4007                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
4008                let should_add_view = this.update(cx, |this, _| {
4009                    if let Some(state) = this.follower_states.get_mut(&leader_id) {
4010                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
4011                    } else {
4012                        anyhow::Ok(false)
4013                    }
4014                })??;
4015
4016                if should_add_view {
4017                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
4018                }
4019            }
4020            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
4021                let should_add_view = this.update(cx, |this, _| {
4022                    if let Some(state) = this.follower_states.get_mut(&leader_id) {
4023                        state.active_view_id = update_active_view
4024                            .view
4025                            .as_ref()
4026                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
4027
4028                        if state.active_view_id.is_some_and(|view_id| {
4029                            !state.items_by_leader_view_id.contains_key(&view_id)
4030                        }) {
4031                            anyhow::Ok(true)
4032                        } else {
4033                            anyhow::Ok(false)
4034                        }
4035                    } else {
4036                        anyhow::Ok(false)
4037                    }
4038                })??;
4039
4040                if should_add_view {
4041                    if let Some(view) = update_active_view.view {
4042                        Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
4043                    }
4044                }
4045            }
4046            proto::update_followers::Variant::UpdateView(update_view) => {
4047                let variant = update_view
4048                    .variant
4049                    .ok_or_else(|| anyhow!("missing update view variant"))?;
4050                let id = update_view
4051                    .id
4052                    .ok_or_else(|| anyhow!("missing update view id"))?;
4053                let mut tasks = Vec::new();
4054                this.update_in(cx, |this, window, cx| {
4055                    let project = this.project.clone();
4056                    if let Some(state) = this.follower_states.get(&leader_id) {
4057                        let view_id = ViewId::from_proto(id.clone())?;
4058                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
4059                            tasks.push(item.view.apply_update_proto(
4060                                &project,
4061                                variant.clone(),
4062                                window,
4063                                cx,
4064                            ));
4065                        }
4066                    }
4067                    anyhow::Ok(())
4068                })??;
4069                try_join_all(tasks).await.log_err();
4070            }
4071        }
4072        this.update_in(cx, |this, window, cx| {
4073            this.leader_updated(leader_id, window, cx)
4074        })?;
4075        Ok(())
4076    }
4077
4078    async fn add_view_from_leader(
4079        this: WeakEntity<Self>,
4080        leader_id: PeerId,
4081        view: &proto::View,
4082        cx: &mut AsyncWindowContext,
4083    ) -> Result<()> {
4084        let this = this.upgrade().context("workspace dropped")?;
4085
4086        let Some(id) = view.id.clone() else {
4087            return Err(anyhow!("no id for view"));
4088        };
4089        let id = ViewId::from_proto(id)?;
4090        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
4091
4092        let pane = this.update(cx, |this, _cx| {
4093            let state = this
4094                .follower_states
4095                .get(&leader_id)
4096                .context("stopped following")?;
4097            anyhow::Ok(state.pane().clone())
4098        })??;
4099        let existing_item = pane.update_in(cx, |pane, window, cx| {
4100            let client = this.read(cx).client().clone();
4101            pane.items().find_map(|item| {
4102                let item = item.to_followable_item_handle(cx)?;
4103                if item.remote_id(&client, window, cx) == Some(id) {
4104                    Some(item)
4105                } else {
4106                    None
4107                }
4108            })
4109        })?;
4110        let item = if let Some(existing_item) = existing_item {
4111            existing_item
4112        } else {
4113            let variant = view.variant.clone();
4114            if variant.is_none() {
4115                Err(anyhow!("missing view variant"))?;
4116            }
4117
4118            let task = cx.update(|window, cx| {
4119                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
4120            })?;
4121
4122            let Some(task) = task else {
4123                return Err(anyhow!(
4124                    "failed to construct view from leader (maybe from a different version of zed?)"
4125                ));
4126            };
4127
4128            let mut new_item = task.await?;
4129            pane.update_in(cx, |pane, window, cx| {
4130                let mut item_to_remove = None;
4131                for (ix, item) in pane.items().enumerate() {
4132                    if let Some(item) = item.to_followable_item_handle(cx) {
4133                        match new_item.dedup(item.as_ref(), window, cx) {
4134                            Some(item::Dedup::KeepExisting) => {
4135                                new_item =
4136                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
4137                                break;
4138                            }
4139                            Some(item::Dedup::ReplaceExisting) => {
4140                                item_to_remove = Some((ix, item.item_id()));
4141                                break;
4142                            }
4143                            None => {}
4144                        }
4145                    }
4146                }
4147
4148                if let Some((ix, id)) = item_to_remove {
4149                    pane.remove_item(id, false, false, window, cx);
4150                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
4151                }
4152            })?;
4153
4154            new_item
4155        };
4156
4157        this.update_in(cx, |this, window, cx| {
4158            let state = this.follower_states.get_mut(&leader_id)?;
4159            item.set_leader_peer_id(Some(leader_id), window, cx);
4160            state.items_by_leader_view_id.insert(
4161                id,
4162                FollowerView {
4163                    view: item,
4164                    location: panel_id,
4165                },
4166            );
4167
4168            Some(())
4169        })?;
4170
4171        Ok(())
4172    }
4173
4174    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
4175        let mut is_project_item = true;
4176        let mut update = proto::UpdateActiveView::default();
4177        if window.is_window_active() {
4178            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
4179
4180            if let Some(item) = active_item {
4181                if item.item_focus_handle(cx).contains_focused(window, cx) {
4182                    let leader_id = self
4183                        .pane_for(&*item)
4184                        .and_then(|pane| self.leader_for_pane(&pane));
4185
4186                    if let Some(item) = item.to_followable_item_handle(cx) {
4187                        let id = item
4188                            .remote_id(&self.app_state.client, window, cx)
4189                            .map(|id| id.to_proto());
4190
4191                        if let Some(id) = id.clone() {
4192                            if let Some(variant) = item.to_state_proto(window, cx) {
4193                                let view = Some(proto::View {
4194                                    id: Some(id.clone()),
4195                                    leader_id,
4196                                    variant: Some(variant),
4197                                    panel_id: panel_id.map(|id| id as i32),
4198                                });
4199
4200                                is_project_item = item.is_project_item(window, cx);
4201                                update = proto::UpdateActiveView {
4202                                    view,
4203                                    // TODO: Remove after version 0.145.x stabilizes.
4204                                    id: Some(id.clone()),
4205                                    leader_id,
4206                                };
4207                            }
4208                        };
4209                    }
4210                }
4211            }
4212        }
4213
4214        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
4215        if active_view_id != self.last_active_view_id.as_ref() {
4216            self.last_active_view_id = active_view_id.cloned();
4217            self.update_followers(
4218                is_project_item,
4219                proto::update_followers::Variant::UpdateActiveView(update),
4220                window,
4221                cx,
4222            );
4223        }
4224    }
4225
4226    fn active_item_for_followers(
4227        &self,
4228        window: &mut Window,
4229        cx: &mut App,
4230    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
4231        let mut active_item = None;
4232        let mut panel_id = None;
4233        for dock in self.all_docks() {
4234            if dock.focus_handle(cx).contains_focused(window, cx) {
4235                if let Some(panel) = dock.read(cx).active_panel() {
4236                    if let Some(pane) = panel.pane(cx) {
4237                        if let Some(item) = pane.read(cx).active_item() {
4238                            active_item = Some(item);
4239                            panel_id = panel.remote_id();
4240                            break;
4241                        }
4242                    }
4243                }
4244            }
4245        }
4246
4247        if active_item.is_none() {
4248            active_item = self.active_pane().read(cx).active_item();
4249        }
4250        (active_item, panel_id)
4251    }
4252
4253    fn update_followers(
4254        &self,
4255        project_only: bool,
4256        update: proto::update_followers::Variant,
4257        _: &mut Window,
4258        cx: &mut App,
4259    ) -> Option<()> {
4260        // If this update only applies to for followers in the current project,
4261        // then skip it unless this project is shared. If it applies to all
4262        // followers, regardless of project, then set `project_id` to none,
4263        // indicating that it goes to all followers.
4264        let project_id = if project_only {
4265            Some(self.project.read(cx).remote_id()?)
4266        } else {
4267            None
4268        };
4269        self.app_state().workspace_store.update(cx, |store, cx| {
4270            store.update_followers(project_id, update, cx)
4271        })
4272    }
4273
4274    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<PeerId> {
4275        self.follower_states.iter().find_map(|(leader_id, state)| {
4276            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
4277                Some(*leader_id)
4278            } else {
4279                None
4280            }
4281        })
4282    }
4283
4284    fn leader_updated(
4285        &mut self,
4286        leader_id: PeerId,
4287        window: &mut Window,
4288        cx: &mut Context<Self>,
4289    ) -> Option<()> {
4290        cx.notify();
4291
4292        let call = self.active_call()?;
4293        let room = call.read(cx).room()?.read(cx);
4294        let participant = room.remote_participant_for_peer_id(leader_id)?;
4295
4296        let leader_in_this_app;
4297        let leader_in_this_project;
4298        match participant.location {
4299            call::ParticipantLocation::SharedProject { project_id } => {
4300                leader_in_this_app = true;
4301                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
4302            }
4303            call::ParticipantLocation::UnsharedProject => {
4304                leader_in_this_app = true;
4305                leader_in_this_project = false;
4306            }
4307            call::ParticipantLocation::External => {
4308                leader_in_this_app = false;
4309                leader_in_this_project = false;
4310            }
4311        };
4312
4313        let state = self.follower_states.get(&leader_id)?;
4314        let mut item_to_activate = None;
4315        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
4316            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id) {
4317                if leader_in_this_project || !item.view.is_project_item(window, cx) {
4318                    item_to_activate = Some((item.location, item.view.boxed_clone()));
4319                }
4320            }
4321        } else if let Some(shared_screen) =
4322            self.shared_screen_for_peer(leader_id, &state.center_pane, window, cx)
4323        {
4324            item_to_activate = Some((None, Box::new(shared_screen)));
4325        }
4326
4327        let (panel_id, item) = item_to_activate?;
4328
4329        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
4330        let pane;
4331        if let Some(panel_id) = panel_id {
4332            pane = self
4333                .activate_panel_for_proto_id(panel_id, window, cx)?
4334                .pane(cx)?;
4335            let state = self.follower_states.get_mut(&leader_id)?;
4336            state.dock_pane = Some(pane.clone());
4337        } else {
4338            pane = state.center_pane.clone();
4339            let state = self.follower_states.get_mut(&leader_id)?;
4340            if let Some(dock_pane) = state.dock_pane.take() {
4341                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
4342            }
4343        }
4344
4345        pane.update(cx, |pane, cx| {
4346            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
4347            if let Some(index) = pane.index_for_item(item.as_ref()) {
4348                pane.activate_item(index, false, false, window, cx);
4349            } else {
4350                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
4351            }
4352
4353            if focus_active_item {
4354                pane.focus_active_item(window, cx)
4355            }
4356        });
4357
4358        None
4359    }
4360
4361    #[cfg(target_os = "windows")]
4362    fn shared_screen_for_peer(
4363        &self,
4364        _peer_id: PeerId,
4365        _pane: &Entity<Pane>,
4366        _window: &mut Window,
4367        _cx: &mut App,
4368    ) -> Option<Entity<SharedScreen>> {
4369        None
4370    }
4371
4372    #[cfg(not(target_os = "windows"))]
4373    fn shared_screen_for_peer(
4374        &self,
4375        peer_id: PeerId,
4376        pane: &Entity<Pane>,
4377        window: &mut Window,
4378        cx: &mut App,
4379    ) -> Option<Entity<SharedScreen>> {
4380        let call = self.active_call()?;
4381        let room = call.read(cx).room()?.read(cx);
4382        let participant = room.remote_participant_for_peer_id(peer_id)?;
4383        let track = participant.video_tracks.values().next()?.clone();
4384        let user = participant.user.clone();
4385
4386        for item in pane.read(cx).items_of_type::<SharedScreen>() {
4387            if item.read(cx).peer_id == peer_id {
4388                return Some(item);
4389            }
4390        }
4391
4392        Some(cx.new(|cx| SharedScreen::new(track, peer_id, user.clone(), window, cx)))
4393    }
4394
4395    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
4396        if window.is_window_active() {
4397            self.update_active_view_for_followers(window, cx);
4398
4399            if let Some(database_id) = self.database_id {
4400                cx.background_spawn(persistence::DB.update_timestamp(database_id))
4401                    .detach();
4402            }
4403        } else {
4404            for pane in &self.panes {
4405                pane.update(cx, |pane, cx| {
4406                    if let Some(item) = pane.active_item() {
4407                        item.workspace_deactivated(window, cx);
4408                    }
4409                    for item in pane.items() {
4410                        if matches!(
4411                            item.workspace_settings(cx).autosave,
4412                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
4413                        ) {
4414                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
4415                                .detach_and_log_err(cx);
4416                        }
4417                    }
4418                });
4419            }
4420        }
4421    }
4422
4423    pub fn active_call(&self) -> Option<&Entity<ActiveCall>> {
4424        self.active_call.as_ref().map(|(call, _)| call)
4425    }
4426
4427    fn on_active_call_event(
4428        &mut self,
4429        _: &Entity<ActiveCall>,
4430        event: &call::room::Event,
4431        window: &mut Window,
4432        cx: &mut Context<Self>,
4433    ) {
4434        match event {
4435            call::room::Event::ParticipantLocationChanged { participant_id }
4436            | call::room::Event::RemoteVideoTracksChanged { participant_id } => {
4437                self.leader_updated(*participant_id, window, cx);
4438            }
4439            _ => {}
4440        }
4441    }
4442
4443    pub fn database_id(&self) -> Option<WorkspaceId> {
4444        self.database_id
4445    }
4446
4447    pub fn session_id(&self) -> Option<String> {
4448        self.session_id.clone()
4449    }
4450
4451    fn local_paths(&self, cx: &App) -> Option<Vec<Arc<Path>>> {
4452        let project = self.project().read(cx);
4453
4454        if project.is_local() {
4455            Some(
4456                project
4457                    .visible_worktrees(cx)
4458                    .map(|worktree| worktree.read(cx).abs_path())
4459                    .collect::<Vec<_>>(),
4460            )
4461        } else {
4462            None
4463        }
4464    }
4465
4466    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
4467        match member {
4468            Member::Axis(PaneAxis { members, .. }) => {
4469                for child in members.iter() {
4470                    self.remove_panes(child.clone(), window, cx)
4471                }
4472            }
4473            Member::Pane(pane) => {
4474                self.force_remove_pane(&pane, &None, window, cx);
4475            }
4476        }
4477    }
4478
4479    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
4480        self.session_id.take();
4481        self.serialize_workspace_internal(window, cx)
4482    }
4483
4484    fn force_remove_pane(
4485        &mut self,
4486        pane: &Entity<Pane>,
4487        focus_on: &Option<Entity<Pane>>,
4488        window: &mut Window,
4489        cx: &mut Context<Workspace>,
4490    ) {
4491        self.panes.retain(|p| p != pane);
4492        if let Some(focus_on) = focus_on {
4493            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
4494        } else {
4495            if self.active_pane() == pane {
4496                self.panes
4497                    .last()
4498                    .unwrap()
4499                    .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
4500            }
4501        }
4502        if self.last_active_center_pane == Some(pane.downgrade()) {
4503            self.last_active_center_pane = None;
4504        }
4505        cx.notify();
4506    }
4507
4508    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
4509        if self._schedule_serialize.is_none() {
4510            self._schedule_serialize = Some(cx.spawn_in(window, |this, mut cx| async move {
4511                cx.background_executor()
4512                    .timer(Duration::from_millis(100))
4513                    .await;
4514                this.update_in(&mut cx, |this, window, cx| {
4515                    this.serialize_workspace_internal(window, cx).detach();
4516                    this._schedule_serialize.take();
4517                })
4518                .log_err();
4519            }));
4520        }
4521    }
4522
4523    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
4524        let Some(database_id) = self.database_id() else {
4525            return Task::ready(());
4526        };
4527
4528        fn serialize_pane_handle(
4529            pane_handle: &Entity<Pane>,
4530            window: &mut Window,
4531            cx: &mut App,
4532        ) -> SerializedPane {
4533            let (items, active, pinned_count) = {
4534                let pane = pane_handle.read(cx);
4535                let active_item_id = pane.active_item().map(|item| item.item_id());
4536                (
4537                    pane.items()
4538                        .filter_map(|handle| {
4539                            let handle = handle.to_serializable_item_handle(cx)?;
4540
4541                            Some(SerializedItem {
4542                                kind: Arc::from(handle.serialized_item_kind()),
4543                                item_id: handle.item_id().as_u64(),
4544                                active: Some(handle.item_id()) == active_item_id,
4545                                preview: pane.is_active_preview_item(handle.item_id()),
4546                            })
4547                        })
4548                        .collect::<Vec<_>>(),
4549                    pane.has_focus(window, cx),
4550                    pane.pinned_count(),
4551                )
4552            };
4553
4554            SerializedPane::new(items, active, pinned_count)
4555        }
4556
4557        fn build_serialized_pane_group(
4558            pane_group: &Member,
4559            window: &mut Window,
4560            cx: &mut App,
4561        ) -> SerializedPaneGroup {
4562            match pane_group {
4563                Member::Axis(PaneAxis {
4564                    axis,
4565                    members,
4566                    flexes,
4567                    bounding_boxes: _,
4568                }) => SerializedPaneGroup::Group {
4569                    axis: SerializedAxis(*axis),
4570                    children: members
4571                        .iter()
4572                        .map(|member| build_serialized_pane_group(member, window, cx))
4573                        .collect::<Vec<_>>(),
4574                    flexes: Some(flexes.lock().clone()),
4575                },
4576                Member::Pane(pane_handle) => {
4577                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
4578                }
4579            }
4580        }
4581
4582        fn build_serialized_docks(
4583            this: &Workspace,
4584            window: &mut Window,
4585            cx: &mut App,
4586        ) -> DockStructure {
4587            let left_dock = this.left_dock.read(cx);
4588            let left_visible = left_dock.is_open();
4589            let left_active_panel = left_dock
4590                .active_panel()
4591                .map(|panel| panel.persistent_name().to_string());
4592            let left_dock_zoom = left_dock
4593                .active_panel()
4594                .map(|panel| panel.is_zoomed(window, cx))
4595                .unwrap_or(false);
4596
4597            let right_dock = this.right_dock.read(cx);
4598            let right_visible = right_dock.is_open();
4599            let right_active_panel = right_dock
4600                .active_panel()
4601                .map(|panel| panel.persistent_name().to_string());
4602            let right_dock_zoom = right_dock
4603                .active_panel()
4604                .map(|panel| panel.is_zoomed(window, cx))
4605                .unwrap_or(false);
4606
4607            let bottom_dock = this.bottom_dock.read(cx);
4608            let bottom_visible = bottom_dock.is_open();
4609            let bottom_active_panel = bottom_dock
4610                .active_panel()
4611                .map(|panel| panel.persistent_name().to_string());
4612            let bottom_dock_zoom = bottom_dock
4613                .active_panel()
4614                .map(|panel| panel.is_zoomed(window, cx))
4615                .unwrap_or(false);
4616
4617            DockStructure {
4618                left: DockData {
4619                    visible: left_visible,
4620                    active_panel: left_active_panel,
4621                    zoom: left_dock_zoom,
4622                },
4623                right: DockData {
4624                    visible: right_visible,
4625                    active_panel: right_active_panel,
4626                    zoom: right_dock_zoom,
4627                },
4628                bottom: DockData {
4629                    visible: bottom_visible,
4630                    active_panel: bottom_active_panel,
4631                    zoom: bottom_dock_zoom,
4632                },
4633            }
4634        }
4635
4636        let location = if let Some(ssh_project) = &self.serialized_ssh_project {
4637            Some(SerializedWorkspaceLocation::Ssh(ssh_project.clone()))
4638        } else if let Some(local_paths) = self.local_paths(cx) {
4639            if !local_paths.is_empty() {
4640                Some(SerializedWorkspaceLocation::from_local_paths(local_paths))
4641            } else {
4642                None
4643            }
4644        } else {
4645            None
4646        };
4647
4648        if let Some(location) = location {
4649            let center_group = build_serialized_pane_group(&self.center.root, window, cx);
4650            let docks = build_serialized_docks(self, window, cx);
4651            let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
4652            let serialized_workspace = SerializedWorkspace {
4653                id: database_id,
4654                location,
4655                center_group,
4656                window_bounds,
4657                display: Default::default(),
4658                docks,
4659                centered_layout: self.centered_layout,
4660                session_id: self.session_id.clone(),
4661                window_id: Some(window.window_handle().window_id().as_u64()),
4662            };
4663            return window.spawn(cx, |_| persistence::DB.save_workspace(serialized_workspace));
4664        }
4665        Task::ready(())
4666    }
4667
4668    async fn serialize_items(
4669        this: &WeakEntity<Self>,
4670        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
4671        cx: &mut AsyncWindowContext,
4672    ) -> Result<()> {
4673        const CHUNK_SIZE: usize = 200;
4674
4675        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
4676
4677        while let Some(items_received) = serializable_items.next().await {
4678            let unique_items =
4679                items_received
4680                    .into_iter()
4681                    .fold(HashMap::default(), |mut acc, item| {
4682                        acc.entry(item.item_id()).or_insert(item);
4683                        acc
4684                    });
4685
4686            // We use into_iter() here so that the references to the items are moved into
4687            // the tasks and not kept alive while we're sleeping.
4688            for (_, item) in unique_items.into_iter() {
4689                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
4690                    item.serialize(workspace, false, window, cx)
4691                }) {
4692                    cx.background_spawn(async move { task.await.log_err() })
4693                        .detach();
4694                }
4695            }
4696
4697            cx.background_executor()
4698                .timer(SERIALIZATION_THROTTLE_TIME)
4699                .await;
4700        }
4701
4702        Ok(())
4703    }
4704
4705    pub(crate) fn enqueue_item_serialization(
4706        &mut self,
4707        item: Box<dyn SerializableItemHandle>,
4708    ) -> Result<()> {
4709        self.serializable_items_tx
4710            .unbounded_send(item)
4711            .map_err(|err| anyhow!("failed to send serializable item over channel: {}", err))
4712    }
4713
4714    pub(crate) fn load_workspace(
4715        serialized_workspace: SerializedWorkspace,
4716        paths_to_open: Vec<Option<ProjectPath>>,
4717        window: &mut Window,
4718        cx: &mut Context<Workspace>,
4719    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
4720        cx.spawn_in(window, |workspace, mut cx| async move {
4721            let project = workspace.update(&mut cx, |workspace, _| workspace.project().clone())?;
4722
4723            let mut center_group = None;
4724            let mut center_items = None;
4725
4726            // Traverse the splits tree and add to things
4727            if let Some((group, active_pane, items)) = serialized_workspace
4728                .center_group
4729                .deserialize(
4730                    &project,
4731                    serialized_workspace.id,
4732                    workspace.clone(),
4733                    &mut cx,
4734                )
4735                .await
4736            {
4737                center_items = Some(items);
4738                center_group = Some((group, active_pane))
4739            }
4740
4741            let mut items_by_project_path = HashMap::default();
4742            let mut item_ids_by_kind = HashMap::default();
4743            let mut all_deserialized_items = Vec::default();
4744            cx.update(|_, cx| {
4745                for item in center_items.unwrap_or_default().into_iter().flatten() {
4746                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
4747                        item_ids_by_kind
4748                            .entry(serializable_item_handle.serialized_item_kind())
4749                            .or_insert(Vec::new())
4750                            .push(item.item_id().as_u64() as ItemId);
4751                    }
4752
4753                    if let Some(project_path) = item.project_path(cx) {
4754                        items_by_project_path.insert(project_path, item.clone());
4755                    }
4756                    all_deserialized_items.push(item);
4757                }
4758            })?;
4759
4760            let opened_items = paths_to_open
4761                .into_iter()
4762                .map(|path_to_open| {
4763                    path_to_open
4764                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
4765                })
4766                .collect::<Vec<_>>();
4767
4768            // Remove old panes from workspace panes list
4769            workspace.update_in(&mut cx, |workspace, window, cx| {
4770                if let Some((center_group, active_pane)) = center_group {
4771                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
4772
4773                    // Swap workspace center group
4774                    workspace.center = PaneGroup::with_root(center_group);
4775                    if let Some(active_pane) = active_pane {
4776                        workspace.set_active_pane(&active_pane, window, cx);
4777                        cx.focus_self(window);
4778                    } else {
4779                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
4780                    }
4781                }
4782
4783                let docks = serialized_workspace.docks;
4784
4785                for (dock, serialized_dock) in [
4786                    (&mut workspace.right_dock, docks.right),
4787                    (&mut workspace.left_dock, docks.left),
4788                    (&mut workspace.bottom_dock, docks.bottom),
4789                ]
4790                .iter_mut()
4791                {
4792                    dock.update(cx, |dock, cx| {
4793                        dock.serialized_dock = Some(serialized_dock.clone());
4794                        dock.restore_state(window, cx);
4795                    });
4796                }
4797
4798                cx.notify();
4799            })?;
4800
4801            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
4802            // after loading the items, we might have different items and in order to avoid
4803            // the database filling up, we delete items that haven't been loaded now.
4804            //
4805            // The items that have been loaded, have been saved after they've been added to the workspace.
4806            let clean_up_tasks = workspace.update_in(&mut cx, |_, window, cx| {
4807                item_ids_by_kind
4808                    .into_iter()
4809                    .map(|(item_kind, loaded_items)| {
4810                        SerializableItemRegistry::cleanup(
4811                            item_kind,
4812                            serialized_workspace.id,
4813                            loaded_items,
4814                            window,
4815                            cx,
4816                        )
4817                        .log_err()
4818                    })
4819                    .collect::<Vec<_>>()
4820            })?;
4821
4822            futures::future::join_all(clean_up_tasks).await;
4823
4824            workspace
4825                .update_in(&mut cx, |workspace, window, cx| {
4826                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
4827                    workspace.serialize_workspace_internal(window, cx).detach();
4828
4829                    // Ensure that we mark the window as edited if we did load dirty items
4830                    workspace.update_window_edited(window, cx);
4831                })
4832                .ok();
4833
4834            Ok(opened_items)
4835        })
4836    }
4837
4838    fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
4839        self.add_workspace_actions_listeners(div, window, cx)
4840            .on_action(cx.listener(Self::close_inactive_items_and_panes))
4841            .on_action(cx.listener(Self::close_all_items_and_panes))
4842            .on_action(cx.listener(Self::save_all))
4843            .on_action(cx.listener(Self::send_keystrokes))
4844            .on_action(cx.listener(Self::add_folder_to_project))
4845            .on_action(cx.listener(Self::follow_next_collaborator))
4846            .on_action(cx.listener(Self::close_window))
4847            .on_action(cx.listener(Self::activate_pane_at_index))
4848            .on_action(cx.listener(Self::move_item_to_pane_at_index))
4849            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
4850            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
4851                let pane = workspace.active_pane().clone();
4852                workspace.unfollow_in_pane(&pane, window, cx);
4853            }))
4854            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
4855                workspace
4856                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
4857                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
4858            }))
4859            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
4860                workspace
4861                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
4862                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
4863            }))
4864            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
4865                workspace
4866                    .save_active_item(SaveIntent::SaveAs, window, cx)
4867                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
4868            }))
4869            .on_action(
4870                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
4871                    workspace.activate_previous_pane(window, cx)
4872                }),
4873            )
4874            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
4875                workspace.activate_next_pane(window, cx)
4876            }))
4877            .on_action(
4878                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
4879                    workspace.activate_next_window(cx)
4880                }),
4881            )
4882            .on_action(
4883                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
4884                    workspace.activate_previous_window(cx)
4885                }),
4886            )
4887            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
4888                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
4889            }))
4890            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
4891                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
4892            }))
4893            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
4894                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
4895            }))
4896            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
4897                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
4898            }))
4899            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
4900                workspace.activate_next_pane(window, cx)
4901            }))
4902            .on_action(cx.listener(
4903                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
4904                    workspace.move_item_to_pane_in_direction(action, window, cx)
4905                },
4906            ))
4907            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
4908                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
4909            }))
4910            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
4911                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
4912            }))
4913            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
4914                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
4915            }))
4916            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
4917                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
4918            }))
4919            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
4920                this.toggle_dock(DockPosition::Left, window, cx);
4921            }))
4922            .on_action(cx.listener(
4923                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
4924                    workspace.toggle_dock(DockPosition::Right, window, cx);
4925                },
4926            ))
4927            .on_action(cx.listener(
4928                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
4929                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
4930                },
4931            ))
4932            .on_action(
4933                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
4934                    workspace.close_all_docks(window, cx);
4935                }),
4936            )
4937            .on_action(cx.listener(
4938                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
4939                    workspace.clear_all_notifications(cx);
4940                },
4941            ))
4942            .on_action(cx.listener(
4943                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
4944                    workspace.reopen_closed_item(window, cx).detach();
4945                },
4946            ))
4947            .on_action(cx.listener(Workspace::toggle_centered_layout))
4948    }
4949
4950    #[cfg(any(test, feature = "test-support"))]
4951    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
4952        use node_runtime::NodeRuntime;
4953        use session::Session;
4954
4955        let client = project.read(cx).client();
4956        let user_store = project.read(cx).user_store();
4957
4958        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
4959        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
4960        window.activate_window();
4961        let app_state = Arc::new(AppState {
4962            languages: project.read(cx).languages().clone(),
4963            workspace_store,
4964            client,
4965            user_store,
4966            fs: project.read(cx).fs().clone(),
4967            build_window_options: |_, _| Default::default(),
4968            node_runtime: NodeRuntime::unavailable(),
4969            session,
4970        });
4971        let workspace = Self::new(Default::default(), project, app_state, window, cx);
4972        workspace
4973            .active_pane
4974            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
4975        workspace
4976    }
4977
4978    pub fn register_action<A: Action>(
4979        &mut self,
4980        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
4981    ) -> &mut Self {
4982        let callback = Arc::new(callback);
4983
4984        self.workspace_actions.push(Box::new(move |div, _, cx| {
4985            let callback = callback.clone();
4986            div.on_action(cx.listener(move |workspace, event, window, cx| {
4987                (callback.clone())(workspace, event, window, cx)
4988            }))
4989        }));
4990        self
4991    }
4992
4993    fn add_workspace_actions_listeners(
4994        &self,
4995        mut div: Div,
4996        window: &mut Window,
4997        cx: &mut Context<Self>,
4998    ) -> Div {
4999        for action in self.workspace_actions.iter() {
5000            div = (action)(div, window, cx)
5001        }
5002        div
5003    }
5004
5005    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
5006        self.modal_layer.read(cx).has_active_modal()
5007    }
5008
5009    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
5010        self.modal_layer.read(cx).active_modal()
5011    }
5012
5013    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
5014    where
5015        B: FnOnce(&mut Window, &mut Context<V>) -> V,
5016    {
5017        self.modal_layer.update(cx, |modal_layer, cx| {
5018            modal_layer.toggle_modal(window, cx, build)
5019        })
5020    }
5021
5022    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
5023        self.toast_layer
5024            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
5025    }
5026
5027    pub fn toggle_centered_layout(
5028        &mut self,
5029        _: &ToggleCenteredLayout,
5030        _: &mut Window,
5031        cx: &mut Context<Self>,
5032    ) {
5033        self.centered_layout = !self.centered_layout;
5034        if let Some(database_id) = self.database_id() {
5035            cx.background_spawn(DB.set_centered_layout(database_id, self.centered_layout))
5036                .detach_and_log_err(cx);
5037        }
5038        cx.notify();
5039    }
5040
5041    fn adjust_padding(padding: Option<f32>) -> f32 {
5042        padding
5043            .unwrap_or(Self::DEFAULT_PADDING)
5044            .clamp(0.0, Self::MAX_PADDING)
5045    }
5046
5047    fn render_dock(
5048        &self,
5049        position: DockPosition,
5050        dock: &Entity<Dock>,
5051        window: &mut Window,
5052        cx: &mut App,
5053    ) -> Option<Div> {
5054        if self.zoomed_position == Some(position) {
5055            return None;
5056        }
5057
5058        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
5059            let pane = panel.pane(cx)?;
5060            let follower_states = &self.follower_states;
5061            leader_border_for_pane(follower_states, &pane, window, cx)
5062        });
5063
5064        Some(
5065            div()
5066                .flex()
5067                .flex_none()
5068                .overflow_hidden()
5069                .child(dock.clone())
5070                .children(leader_border),
5071        )
5072    }
5073
5074    pub fn for_window(window: &mut Window, _: &mut App) -> Option<Entity<Workspace>> {
5075        window.root().flatten()
5076    }
5077
5078    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
5079        self.zoomed.as_ref()
5080    }
5081
5082    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
5083        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
5084            return;
5085        };
5086        let windows = cx.windows();
5087        let Some(next_window) = windows
5088            .iter()
5089            .cycle()
5090            .skip_while(|window| window.window_id() != current_window_id)
5091            .nth(1)
5092        else {
5093            return;
5094        };
5095        next_window
5096            .update(cx, |_, window, _| window.activate_window())
5097            .ok();
5098    }
5099
5100    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
5101        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
5102            return;
5103        };
5104        let windows = cx.windows();
5105        let Some(prev_window) = windows
5106            .iter()
5107            .rev()
5108            .cycle()
5109            .skip_while(|window| window.window_id() != current_window_id)
5110            .nth(1)
5111        else {
5112            return;
5113        };
5114        prev_window
5115            .update(cx, |_, window, _| window.activate_window())
5116            .ok();
5117    }
5118}
5119
5120fn leader_border_for_pane(
5121    follower_states: &HashMap<PeerId, FollowerState>,
5122    pane: &Entity<Pane>,
5123    _: &Window,
5124    cx: &App,
5125) -> Option<Div> {
5126    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
5127        if state.pane() == pane {
5128            Some((*leader_id, state))
5129        } else {
5130            None
5131        }
5132    })?;
5133
5134    let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
5135    let leader = room.remote_participant_for_peer_id(leader_id)?;
5136
5137    let mut leader_color = cx
5138        .theme()
5139        .players()
5140        .color_for_participant(leader.participant_index.0)
5141        .cursor;
5142    leader_color.fade_out(0.3);
5143    Some(
5144        div()
5145            .absolute()
5146            .size_full()
5147            .left_0()
5148            .top_0()
5149            .border_2()
5150            .border_color(leader_color),
5151    )
5152}
5153
5154fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
5155    ZED_WINDOW_POSITION
5156        .zip(*ZED_WINDOW_SIZE)
5157        .map(|(position, size)| Bounds {
5158            origin: position,
5159            size,
5160        })
5161}
5162
5163fn open_items(
5164    serialized_workspace: Option<SerializedWorkspace>,
5165    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
5166    window: &mut Window,
5167    cx: &mut Context<Workspace>,
5168) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> {
5169    let restored_items = serialized_workspace.map(|serialized_workspace| {
5170        Workspace::load_workspace(
5171            serialized_workspace,
5172            project_paths_to_open
5173                .iter()
5174                .map(|(_, project_path)| project_path)
5175                .cloned()
5176                .collect(),
5177            window,
5178            cx,
5179        )
5180    });
5181
5182    cx.spawn_in(window, |workspace, mut cx| async move {
5183        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
5184
5185        if let Some(restored_items) = restored_items {
5186            let restored_items = restored_items.await?;
5187
5188            let restored_project_paths = restored_items
5189                .iter()
5190                .filter_map(|item| {
5191                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
5192                        .ok()
5193                        .flatten()
5194                })
5195                .collect::<HashSet<_>>();
5196
5197            for restored_item in restored_items {
5198                opened_items.push(restored_item.map(Ok));
5199            }
5200
5201            project_paths_to_open
5202                .iter_mut()
5203                .for_each(|(_, project_path)| {
5204                    if let Some(project_path_to_open) = project_path {
5205                        if restored_project_paths.contains(project_path_to_open) {
5206                            *project_path = None;
5207                        }
5208                    }
5209                });
5210        } else {
5211            for _ in 0..project_paths_to_open.len() {
5212                opened_items.push(None);
5213            }
5214        }
5215        assert!(opened_items.len() == project_paths_to_open.len());
5216
5217        let tasks =
5218            project_paths_to_open
5219                .into_iter()
5220                .enumerate()
5221                .map(|(ix, (abs_path, project_path))| {
5222                    let workspace = workspace.clone();
5223                    cx.spawn(|mut cx| async move {
5224                        let file_project_path = project_path?;
5225                        let abs_path_task = workspace.update(&mut cx, |workspace, cx| {
5226                            workspace.project().update(cx, |project, cx| {
5227                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
5228                            })
5229                        });
5230
5231                        // We only want to open file paths here. If one of the items
5232                        // here is a directory, it was already opened further above
5233                        // with a `find_or_create_worktree`.
5234                        if let Ok(task) = abs_path_task {
5235                            if task.await.map_or(true, |p| p.is_file()) {
5236                                return Some((
5237                                    ix,
5238                                    workspace
5239                                        .update_in(&mut cx, |workspace, window, cx| {
5240                                            workspace.open_path(
5241                                                file_project_path,
5242                                                None,
5243                                                true,
5244                                                window,
5245                                                cx,
5246                                            )
5247                                        })
5248                                        .log_err()?
5249                                        .await,
5250                                ));
5251                            }
5252                        }
5253                        None
5254                    })
5255                });
5256
5257        let tasks = tasks.collect::<Vec<_>>();
5258
5259        let tasks = futures::future::join_all(tasks);
5260        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
5261            opened_items[ix] = Some(path_open_result);
5262        }
5263
5264        Ok(opened_items)
5265    })
5266}
5267
5268enum ActivateInDirectionTarget {
5269    Pane(Entity<Pane>),
5270    Dock(Entity<Dock>),
5271}
5272
5273fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
5274    const REPORT_ISSUE_URL: &str = "https://github.com/zed-industries/zed/issues/new?assignees=&labels=admin+read%2Ctriage%2Cbug&projects=&template=1_bug_report.yml";
5275
5276    workspace
5277        .update(cx, |workspace, _, cx| {
5278            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
5279                struct DatabaseFailedNotification;
5280
5281                workspace.show_notification(
5282                    NotificationId::unique::<DatabaseFailedNotification>(),
5283                    cx,
5284                    |cx| {
5285                        cx.new(|cx| {
5286                            MessageNotification::new("Failed to load the database file.", cx)
5287                                .primary_message("File an Issue")
5288                                .primary_icon(IconName::Plus)
5289                                .primary_on_click(|_window, cx| cx.open_url(REPORT_ISSUE_URL))
5290                        })
5291                    },
5292                );
5293            }
5294        })
5295        .log_err();
5296}
5297
5298impl Focusable for Workspace {
5299    fn focus_handle(&self, cx: &App) -> FocusHandle {
5300        self.active_pane.focus_handle(cx)
5301    }
5302}
5303
5304#[derive(Clone)]
5305struct DraggedDock(DockPosition);
5306
5307impl Render for DraggedDock {
5308    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
5309        gpui::Empty
5310    }
5311}
5312
5313impl Render for Workspace {
5314    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
5315        let mut context = KeyContext::new_with_defaults();
5316        context.add("Workspace");
5317        context.set("keyboard_layout", cx.keyboard_layout().clone());
5318        let centered_layout = self.centered_layout
5319            && self.center.panes().len() == 1
5320            && self.active_item(cx).is_some();
5321        let render_padding = |size| {
5322            (size > 0.0).then(|| {
5323                div()
5324                    .h_full()
5325                    .w(relative(size))
5326                    .bg(cx.theme().colors().editor_background)
5327                    .border_color(cx.theme().colors().pane_group_border)
5328            })
5329        };
5330        let paddings = if centered_layout {
5331            let settings = WorkspaceSettings::get_global(cx).centered_layout;
5332            (
5333                render_padding(Self::adjust_padding(settings.left_padding)),
5334                render_padding(Self::adjust_padding(settings.right_padding)),
5335            )
5336        } else {
5337            (None, None)
5338        };
5339        let ui_font = theme::setup_ui_font(window, cx);
5340
5341        let theme = cx.theme().clone();
5342        let colors = theme.colors();
5343
5344        client_side_decorations(
5345            self.actions(div(), window, cx)
5346                .key_context(context)
5347                .relative()
5348                .size_full()
5349                .flex()
5350                .flex_col()
5351                .font(ui_font)
5352                .gap_0()
5353                .justify_start()
5354                .items_start()
5355                .text_color(colors.text)
5356                .overflow_hidden()
5357                .children(self.titlebar_item.clone())
5358                .child(
5359                    div()
5360                        .size_full()
5361                        .relative()
5362                        .flex_1()
5363                        .flex()
5364                        .flex_col()
5365                        .child(
5366                            div()
5367                                .id("workspace")
5368                                .bg(colors.background)
5369                                .relative()
5370                                .flex_1()
5371                                .w_full()
5372                                .flex()
5373                                .flex_col()
5374                                .overflow_hidden()
5375                                .border_t_1()
5376                                .border_b_1()
5377                                .border_color(colors.border)
5378                                .child({
5379                                    let this = cx.entity().clone();
5380                                    canvas(
5381                                        move |bounds, window, cx| {
5382                                            this.update(cx, |this, cx| {
5383                                                let bounds_changed = this.bounds != bounds;
5384                                                this.bounds = bounds;
5385
5386                                                if bounds_changed {
5387                                                    this.left_dock.update(cx, |dock, cx| {
5388                                                        dock.clamp_panel_size(
5389                                                            bounds.size.width,
5390                                                            window,
5391                                                            cx,
5392                                                        )
5393                                                    });
5394
5395                                                    this.right_dock.update(cx, |dock, cx| {
5396                                                        dock.clamp_panel_size(
5397                                                            bounds.size.width,
5398                                                            window,
5399                                                            cx,
5400                                                        )
5401                                                    });
5402
5403                                                    this.bottom_dock.update(cx, |dock, cx| {
5404                                                        dock.clamp_panel_size(
5405                                                            bounds.size.height,
5406                                                            window,
5407                                                            cx,
5408                                                        )
5409                                                    });
5410                                                }
5411                                            })
5412                                        },
5413                                        |_, _, _, _| {},
5414                                    )
5415                                    .absolute()
5416                                    .size_full()
5417                                })
5418                                .when(self.zoomed.is_none(), |this| {
5419                                    this.on_drag_move(cx.listener(
5420                                        move |workspace,
5421                                              e: &DragMoveEvent<DraggedDock>,
5422                                              window,
5423                                              cx| {
5424                                            if workspace.previous_dock_drag_coordinates
5425                                                != Some(e.event.position)
5426                                            {
5427                                                workspace.previous_dock_drag_coordinates =
5428                                                    Some(e.event.position);
5429                                                match e.drag(cx).0 {
5430                                                    DockPosition::Left => {
5431                                                        resize_left_dock(
5432                                                            e.event.position.x
5433                                                                - workspace.bounds.left(),
5434                                                            workspace,
5435                                                            window,
5436                                                            cx,
5437                                                        );
5438                                                    }
5439                                                    DockPosition::Right => {
5440                                                        resize_right_dock(
5441                                                            workspace.bounds.right()
5442                                                                - e.event.position.x,
5443                                                            workspace,
5444                                                            window,
5445                                                            cx,
5446                                                        );
5447                                                    }
5448                                                    DockPosition::Bottom => {
5449                                                        resize_bottom_dock(
5450                                                            workspace.bounds.bottom()
5451                                                                - e.event.position.y,
5452                                                            workspace,
5453                                                            window,
5454                                                            cx,
5455                                                        );
5456                                                    }
5457                                                };
5458                                                workspace.serialize_workspace(window, cx);
5459                                            }
5460                                        },
5461                                    ))
5462                                })
5463                                .child(
5464                                    div()
5465                                        .flex()
5466                                        .flex_row()
5467                                        .h_full()
5468                                        // Left Dock
5469                                        .children(self.render_dock(
5470                                            DockPosition::Left,
5471                                            &self.left_dock,
5472                                            window,
5473                                            cx,
5474                                        ))
5475                                        // Panes
5476                                        .child(
5477                                            div()
5478                                                .flex()
5479                                                .flex_col()
5480                                                .flex_1()
5481                                                .overflow_hidden()
5482                                                .child(
5483                                                    h_flex()
5484                                                        .flex_1()
5485                                                        .when_some(paddings.0, |this, p| {
5486                                                            this.child(p.border_r_1())
5487                                                        })
5488                                                        .child(self.center.render(
5489                                                            &self.project,
5490                                                            &self.follower_states,
5491                                                            self.active_call(),
5492                                                            &self.active_pane,
5493                                                            self.zoomed.as_ref(),
5494                                                            &self.app_state,
5495                                                            window,
5496                                                            cx,
5497                                                        ))
5498                                                        .when_some(paddings.1, |this, p| {
5499                                                            this.child(p.border_l_1())
5500                                                        }),
5501                                                )
5502                                                .children(self.render_dock(
5503                                                    DockPosition::Bottom,
5504                                                    &self.bottom_dock,
5505                                                    window,
5506                                                    cx,
5507                                                )),
5508                                        )
5509                                        // Right Dock
5510                                        .children(self.render_dock(
5511                                            DockPosition::Right,
5512                                            &self.right_dock,
5513                                            window,
5514                                            cx,
5515                                        )),
5516                                )
5517                                .children(self.zoomed.as_ref().and_then(|view| {
5518                                    let zoomed_view = view.upgrade()?;
5519                                    let div = div()
5520                                        .occlude()
5521                                        .absolute()
5522                                        .overflow_hidden()
5523                                        .border_color(colors.border)
5524                                        .bg(colors.background)
5525                                        .child(zoomed_view)
5526                                        .inset_0()
5527                                        .shadow_lg();
5528
5529                                    Some(match self.zoomed_position {
5530                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
5531                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
5532                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
5533                                        None => {
5534                                            div.top_2().bottom_2().left_2().right_2().border_1()
5535                                        }
5536                                    })
5537                                }))
5538                                .children(self.render_notifications(window, cx)),
5539                        )
5540                        .child(self.status_bar.clone())
5541                        .child(self.modal_layer.clone())
5542                        .child(self.toast_layer.clone()),
5543                ),
5544            window,
5545            cx,
5546        )
5547    }
5548}
5549
5550fn resize_bottom_dock(
5551    new_size: Pixels,
5552    workspace: &mut Workspace,
5553    window: &mut Window,
5554    cx: &mut App,
5555) {
5556    let size = new_size.min(workspace.bounds.bottom() - RESIZE_HANDLE_SIZE);
5557    workspace.bottom_dock.update(cx, |bottom_dock, cx| {
5558        bottom_dock.resize_active_panel(Some(size), window, cx);
5559    });
5560}
5561
5562fn resize_right_dock(
5563    new_size: Pixels,
5564    workspace: &mut Workspace,
5565    window: &mut Window,
5566    cx: &mut App,
5567) {
5568    let size = new_size.max(workspace.bounds.left() - RESIZE_HANDLE_SIZE);
5569    workspace.right_dock.update(cx, |right_dock, cx| {
5570        right_dock.resize_active_panel(Some(size), window, cx);
5571    });
5572}
5573
5574fn resize_left_dock(
5575    new_size: Pixels,
5576    workspace: &mut Workspace,
5577    window: &mut Window,
5578    cx: &mut App,
5579) {
5580    let size = new_size.min(workspace.bounds.right() - RESIZE_HANDLE_SIZE);
5581
5582    workspace.left_dock.update(cx, |left_dock, cx| {
5583        left_dock.resize_active_panel(Some(size), window, cx);
5584    });
5585}
5586
5587impl WorkspaceStore {
5588    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
5589        Self {
5590            workspaces: Default::default(),
5591            _subscriptions: vec![
5592                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
5593                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
5594            ],
5595            client,
5596        }
5597    }
5598
5599    pub fn update_followers(
5600        &self,
5601        project_id: Option<u64>,
5602        update: proto::update_followers::Variant,
5603        cx: &App,
5604    ) -> Option<()> {
5605        let active_call = ActiveCall::try_global(cx)?;
5606        let room_id = active_call.read(cx).room()?.read(cx).id();
5607        self.client
5608            .send(proto::UpdateFollowers {
5609                room_id,
5610                project_id,
5611                variant: Some(update),
5612            })
5613            .log_err()
5614    }
5615
5616    pub async fn handle_follow(
5617        this: Entity<Self>,
5618        envelope: TypedEnvelope<proto::Follow>,
5619        mut cx: AsyncApp,
5620    ) -> Result<proto::FollowResponse> {
5621        this.update(&mut cx, |this, cx| {
5622            let follower = Follower {
5623                project_id: envelope.payload.project_id,
5624                peer_id: envelope.original_sender_id()?,
5625            };
5626
5627            let mut response = proto::FollowResponse::default();
5628            this.workspaces.retain(|workspace| {
5629                workspace
5630                    .update(cx, |workspace, window, cx| {
5631                        let handler_response =
5632                            workspace.handle_follow(follower.project_id, window, cx);
5633                        if let Some(active_view) = handler_response.active_view.clone() {
5634                            if workspace.project.read(cx).remote_id() == follower.project_id {
5635                                response.active_view = Some(active_view)
5636                            }
5637                        }
5638                    })
5639                    .is_ok()
5640            });
5641
5642            Ok(response)
5643        })?
5644    }
5645
5646    async fn handle_update_followers(
5647        this: Entity<Self>,
5648        envelope: TypedEnvelope<proto::UpdateFollowers>,
5649        mut cx: AsyncApp,
5650    ) -> Result<()> {
5651        let leader_id = envelope.original_sender_id()?;
5652        let update = envelope.payload;
5653
5654        this.update(&mut cx, |this, cx| {
5655            this.workspaces.retain(|workspace| {
5656                workspace
5657                    .update(cx, |workspace, window, cx| {
5658                        let project_id = workspace.project.read(cx).remote_id();
5659                        if update.project_id != project_id && update.project_id.is_some() {
5660                            return;
5661                        }
5662                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
5663                    })
5664                    .is_ok()
5665            });
5666            Ok(())
5667        })?
5668    }
5669}
5670
5671impl ViewId {
5672    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
5673        Ok(Self {
5674            creator: message
5675                .creator
5676                .ok_or_else(|| anyhow!("creator is missing"))?,
5677            id: message.id,
5678        })
5679    }
5680
5681    pub(crate) fn to_proto(self) -> proto::ViewId {
5682        proto::ViewId {
5683            creator: Some(self.creator),
5684            id: self.id,
5685        }
5686    }
5687}
5688
5689impl FollowerState {
5690    fn pane(&self) -> &Entity<Pane> {
5691        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
5692    }
5693}
5694
5695pub trait WorkspaceHandle {
5696    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
5697}
5698
5699impl WorkspaceHandle for Entity<Workspace> {
5700    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
5701        self.read(cx)
5702            .worktrees(cx)
5703            .flat_map(|worktree| {
5704                let worktree_id = worktree.read(cx).id();
5705                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
5706                    worktree_id,
5707                    path: f.path.clone(),
5708                })
5709            })
5710            .collect::<Vec<_>>()
5711    }
5712}
5713
5714impl std::fmt::Debug for OpenPaths {
5715    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
5716        f.debug_struct("OpenPaths")
5717            .field("paths", &self.paths)
5718            .finish()
5719    }
5720}
5721
5722pub async fn last_opened_workspace_location() -> Option<SerializedWorkspaceLocation> {
5723    DB.last_workspace().await.log_err().flatten()
5724}
5725
5726pub fn last_session_workspace_locations(
5727    last_session_id: &str,
5728    last_session_window_stack: Option<Vec<WindowId>>,
5729) -> Option<Vec<SerializedWorkspaceLocation>> {
5730    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
5731        .log_err()
5732}
5733
5734actions!(collab, [OpenChannelNotes]);
5735actions!(zed, [OpenLog]);
5736
5737async fn join_channel_internal(
5738    channel_id: ChannelId,
5739    app_state: &Arc<AppState>,
5740    requesting_window: Option<WindowHandle<Workspace>>,
5741    active_call: &Entity<ActiveCall>,
5742    cx: &mut AsyncApp,
5743) -> Result<bool> {
5744    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
5745        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
5746            return (false, None);
5747        };
5748
5749        let already_in_channel = room.channel_id() == Some(channel_id);
5750        let should_prompt = room.is_sharing_project()
5751            && !room.remote_participants().is_empty()
5752            && !already_in_channel;
5753        let open_room = if already_in_channel {
5754            active_call.room().cloned()
5755        } else {
5756            None
5757        };
5758        (should_prompt, open_room)
5759    })?;
5760
5761    if let Some(room) = open_room {
5762        let task = room.update(cx, |room, cx| {
5763            if let Some((project, host)) = room.most_active_project(cx) {
5764                return Some(join_in_room_project(project, host, app_state.clone(), cx));
5765            }
5766
5767            None
5768        })?;
5769        if let Some(task) = task {
5770            task.await?;
5771        }
5772        return anyhow::Ok(true);
5773    }
5774
5775    if should_prompt {
5776        if let Some(workspace) = requesting_window {
5777            let answer = workspace
5778                .update(cx, |_, window, cx| {
5779                    window.prompt(
5780                        PromptLevel::Warning,
5781                        "Do you want to switch channels?",
5782                        Some("Leaving this call will unshare your current project."),
5783                        &["Yes, Join Channel", "Cancel"],
5784                        cx,
5785                    )
5786                })?
5787                .await;
5788
5789            if answer == Ok(1) {
5790                return Ok(false);
5791            }
5792        } else {
5793            return Ok(false); // unreachable!() hopefully
5794        }
5795    }
5796
5797    let client = cx.update(|cx| active_call.read(cx).client())?;
5798
5799    let mut client_status = client.status();
5800
5801    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
5802    'outer: loop {
5803        let Some(status) = client_status.recv().await else {
5804            return Err(anyhow!("error connecting"));
5805        };
5806
5807        match status {
5808            Status::Connecting
5809            | Status::Authenticating
5810            | Status::Reconnecting
5811            | Status::Reauthenticating => continue,
5812            Status::Connected { .. } => break 'outer,
5813            Status::SignedOut => return Err(ErrorCode::SignedOut.into()),
5814            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
5815            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
5816                return Err(ErrorCode::Disconnected.into());
5817            }
5818        }
5819    }
5820
5821    let room = active_call
5822        .update(cx, |active_call, cx| {
5823            active_call.join_channel(channel_id, cx)
5824        })?
5825        .await?;
5826
5827    let Some(room) = room else {
5828        return anyhow::Ok(true);
5829    };
5830
5831    room.update(cx, |room, _| room.room_update_completed())?
5832        .await;
5833
5834    let task = room.update(cx, |room, cx| {
5835        if let Some((project, host)) = room.most_active_project(cx) {
5836            return Some(join_in_room_project(project, host, app_state.clone(), cx));
5837        }
5838
5839        // If you are the first to join a channel, see if you should share your project.
5840        if room.remote_participants().is_empty() && !room.local_participant_is_guest() {
5841            if let Some(workspace) = requesting_window {
5842                let project = workspace.update(cx, |workspace, _, cx| {
5843                    let project = workspace.project.read(cx);
5844
5845                    if !CallSettings::get_global(cx).share_on_join {
5846                        return None;
5847                    }
5848
5849                    if (project.is_local() || project.is_via_ssh())
5850                        && project.visible_worktrees(cx).any(|tree| {
5851                            tree.read(cx)
5852                                .root_entry()
5853                                .map_or(false, |entry| entry.is_dir())
5854                        })
5855                    {
5856                        Some(workspace.project.clone())
5857                    } else {
5858                        None
5859                    }
5860                });
5861                if let Ok(Some(project)) = project {
5862                    return Some(cx.spawn(|room, mut cx| async move {
5863                        room.update(&mut cx, |room, cx| room.share_project(project, cx))?
5864                            .await?;
5865                        Ok(())
5866                    }));
5867                }
5868            }
5869        }
5870
5871        None
5872    })?;
5873    if let Some(task) = task {
5874        task.await?;
5875        return anyhow::Ok(true);
5876    }
5877    anyhow::Ok(false)
5878}
5879
5880pub fn join_channel(
5881    channel_id: ChannelId,
5882    app_state: Arc<AppState>,
5883    requesting_window: Option<WindowHandle<Workspace>>,
5884    cx: &mut App,
5885) -> Task<Result<()>> {
5886    let active_call = ActiveCall::global(cx);
5887    cx.spawn(|mut cx| async move {
5888        let result = join_channel_internal(
5889            channel_id,
5890            &app_state,
5891            requesting_window,
5892            &active_call,
5893            &mut cx,
5894        )
5895            .await;
5896
5897        // join channel succeeded, and opened a window
5898        if matches!(result, Ok(true)) {
5899            return anyhow::Ok(());
5900        }
5901
5902        // find an existing workspace to focus and show call controls
5903        let mut active_window =
5904            requesting_window.or_else(|| activate_any_workspace_window(&mut cx));
5905        if active_window.is_none() {
5906            // no open workspaces, make one to show the error in (blergh)
5907            let (window_handle, _) = cx
5908                .update(|cx| {
5909                    Workspace::new_local(vec![], app_state.clone(), requesting_window, None, cx)
5910                })?
5911                .await?;
5912
5913            if result.is_ok() {
5914                cx.update(|cx| {
5915                    cx.dispatch_action(&OpenChannelNotes);
5916                }).log_err();
5917            }
5918
5919            active_window = Some(window_handle);
5920        }
5921
5922        if let Err(err) = result {
5923            log::error!("failed to join channel: {}", err);
5924            if let Some(active_window) = active_window {
5925                active_window
5926                    .update(&mut cx, |_, window, cx| {
5927                        let detail: SharedString = match err.error_code() {
5928                            ErrorCode::SignedOut => {
5929                                "Please sign in to continue.".into()
5930                            }
5931                            ErrorCode::UpgradeRequired => {
5932                                "Your are running an unsupported version of Zed. Please update to continue.".into()
5933                            }
5934                            ErrorCode::NoSuchChannel => {
5935                                "No matching channel was found. Please check the link and try again.".into()
5936                            }
5937                            ErrorCode::Forbidden => {
5938                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
5939                            }
5940                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
5941                            _ => format!("{}\n\nPlease try again.", err).into(),
5942                        };
5943                        window.prompt(
5944                            PromptLevel::Critical,
5945                            "Failed to join channel",
5946                            Some(&detail),
5947                            &["Ok"],
5948                        cx)
5949                    })?
5950                    .await
5951                    .ok();
5952            }
5953        }
5954
5955        // return ok, we showed the error to the user.
5956        anyhow::Ok(())
5957    })
5958}
5959
5960pub async fn get_any_active_workspace(
5961    app_state: Arc<AppState>,
5962    mut cx: AsyncApp,
5963) -> anyhow::Result<WindowHandle<Workspace>> {
5964    // find an existing workspace to focus and show call controls
5965    let active_window = activate_any_workspace_window(&mut cx);
5966    if active_window.is_none() {
5967        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, cx))?
5968            .await?;
5969    }
5970    activate_any_workspace_window(&mut cx).context("could not open zed")
5971}
5972
5973fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
5974    cx.update(|cx| {
5975        if let Some(workspace_window) = cx
5976            .active_window()
5977            .and_then(|window| window.downcast::<Workspace>())
5978        {
5979            return Some(workspace_window);
5980        }
5981
5982        for window in cx.windows() {
5983            if let Some(workspace_window) = window.downcast::<Workspace>() {
5984                workspace_window
5985                    .update(cx, |_, window, _| window.activate_window())
5986                    .ok();
5987                return Some(workspace_window);
5988            }
5989        }
5990        None
5991    })
5992    .ok()
5993    .flatten()
5994}
5995
5996pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
5997    cx.windows()
5998        .into_iter()
5999        .filter_map(|window| window.downcast::<Workspace>())
6000        .filter(|workspace| {
6001            workspace
6002                .read(cx)
6003                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
6004        })
6005        .collect()
6006}
6007
6008#[derive(Default)]
6009pub struct OpenOptions {
6010    pub visible: Option<OpenVisible>,
6011    pub focus: Option<bool>,
6012    pub open_new_workspace: Option<bool>,
6013    pub replace_window: Option<WindowHandle<Workspace>>,
6014    pub env: Option<HashMap<String, String>>,
6015}
6016
6017#[allow(clippy::type_complexity)]
6018pub fn open_paths(
6019    abs_paths: &[PathBuf],
6020    app_state: Arc<AppState>,
6021    open_options: OpenOptions,
6022    cx: &mut App,
6023) -> Task<
6024    anyhow::Result<(
6025        WindowHandle<Workspace>,
6026        Vec<Option<Result<Box<dyn ItemHandle>, anyhow::Error>>>,
6027    )>,
6028> {
6029    let abs_paths = abs_paths.to_vec();
6030    let mut existing = None;
6031    let mut best_match = None;
6032    let mut open_visible = OpenVisible::All;
6033
6034    cx.spawn(move |mut cx| async move {
6035        if open_options.open_new_workspace != Some(true) {
6036            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
6037            let all_metadatas = futures::future::join_all(all_paths)
6038                .await
6039                .into_iter()
6040                .filter_map(|result| result.ok().flatten())
6041                .collect::<Vec<_>>();
6042
6043            cx.update(|cx| {
6044                for window in local_workspace_windows(&cx) {
6045                    if let Ok(workspace) = window.read(&cx) {
6046                        let m = workspace.project.read(&cx).visibility_for_paths(
6047                            &abs_paths,
6048                            &all_metadatas,
6049                            open_options.open_new_workspace == None,
6050                            cx,
6051                        );
6052                        if m > best_match {
6053                            existing = Some(window);
6054                            best_match = m;
6055                        } else if best_match.is_none()
6056                            && open_options.open_new_workspace == Some(false)
6057                        {
6058                            existing = Some(window)
6059                        }
6060                    }
6061                }
6062            })?;
6063
6064            if open_options.open_new_workspace.is_none() && existing.is_none() {
6065                if all_metadatas.iter().all(|file| !file.is_dir) {
6066                    cx.update(|cx| {
6067                        if let Some(window) = cx
6068                            .active_window()
6069                            .and_then(|window| window.downcast::<Workspace>())
6070                        {
6071                            if let Ok(workspace) = window.read(cx) {
6072                                let project = workspace.project().read(cx);
6073                                if project.is_local() && !project.is_via_collab() {
6074                                    existing = Some(window);
6075                                    open_visible = OpenVisible::None;
6076                                    return;
6077                                }
6078                            }
6079                        }
6080                        for window in local_workspace_windows(cx) {
6081                            if let Ok(workspace) = window.read(cx) {
6082                                let project = workspace.project().read(cx);
6083                                if project.is_via_collab() {
6084                                    continue;
6085                                }
6086                                existing = Some(window);
6087                                open_visible = OpenVisible::None;
6088                                break;
6089                            }
6090                        }
6091                    })?;
6092                }
6093            }
6094        }
6095
6096        if let Some(existing) = existing {
6097            let open_task = existing
6098                .update(&mut cx, |workspace, window, cx| {
6099                    window.activate_window();
6100                    workspace.open_paths(
6101                        abs_paths,
6102                        OpenOptions {
6103                            visible: Some(open_visible),
6104                            ..Default::default()
6105                        },
6106                        None,
6107                        window,
6108                        cx,
6109                    )
6110                })?
6111                .await;
6112
6113            _ = existing.update(&mut cx, |workspace, _, cx| {
6114                for item in open_task.iter().flatten() {
6115                    if let Err(e) = item {
6116                        workspace.show_error(&e, cx);
6117                    }
6118                }
6119            });
6120
6121            Ok((existing, open_task))
6122        } else {
6123            cx.update(move |cx| {
6124                Workspace::new_local(
6125                    abs_paths,
6126                    app_state.clone(),
6127                    open_options.replace_window,
6128                    open_options.env,
6129                    cx,
6130                )
6131            })?
6132            .await
6133        }
6134    })
6135}
6136
6137pub fn open_new(
6138    open_options: OpenOptions,
6139    app_state: Arc<AppState>,
6140    cx: &mut App,
6141    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
6142) -> Task<anyhow::Result<()>> {
6143    let task = Workspace::new_local(Vec::new(), app_state, None, open_options.env, cx);
6144    cx.spawn(|mut cx| async move {
6145        let (workspace, opened_paths) = task.await?;
6146        workspace.update(&mut cx, |workspace, window, cx| {
6147            if opened_paths.is_empty() {
6148                init(workspace, window, cx)
6149            }
6150        })?;
6151        Ok(())
6152    })
6153}
6154
6155pub fn create_and_open_local_file(
6156    path: &'static Path,
6157    window: &mut Window,
6158    cx: &mut Context<Workspace>,
6159    default_content: impl 'static + Send + FnOnce() -> Rope,
6160) -> Task<Result<Box<dyn ItemHandle>>> {
6161    cx.spawn_in(window, |workspace, mut cx| async move {
6162        let fs = workspace.update(&mut cx, |workspace, _| workspace.app_state().fs.clone())?;
6163        if !fs.is_file(path).await {
6164            fs.create_file(path, Default::default()).await?;
6165            fs.save(path, &default_content(), Default::default())
6166                .await?;
6167        }
6168
6169        let mut items = workspace
6170            .update_in(&mut cx, |workspace, window, cx| {
6171                workspace.with_local_workspace(window, cx, |workspace, window, cx| {
6172                    workspace.open_paths(
6173                        vec![path.to_path_buf()],
6174                        OpenOptions {
6175                            visible: Some(OpenVisible::None),
6176                            ..Default::default()
6177                        },
6178                        None,
6179                        window,
6180                        cx,
6181                    )
6182                })
6183            })?
6184            .await?
6185            .await;
6186
6187        let item = items.pop().flatten();
6188        item.ok_or_else(|| anyhow!("path {path:?} is not a file"))?
6189    })
6190}
6191
6192pub fn open_ssh_project(
6193    window: WindowHandle<Workspace>,
6194    connection_options: SshConnectionOptions,
6195    cancel_rx: oneshot::Receiver<()>,
6196    delegate: Arc<dyn SshClientDelegate>,
6197    app_state: Arc<AppState>,
6198    paths: Vec<PathBuf>,
6199    cx: &mut App,
6200) -> Task<Result<()>> {
6201    cx.spawn(|mut cx| async move {
6202        let (serialized_ssh_project, workspace_id, serialized_workspace) =
6203            serialize_ssh_project(connection_options.clone(), paths.clone(), &cx).await?;
6204
6205        let session = match cx
6206            .update(|cx| {
6207                remote::SshRemoteClient::new(
6208                    ConnectionIdentifier::Workspace(workspace_id.0),
6209                    connection_options,
6210                    cancel_rx,
6211                    delegate,
6212                    cx,
6213                )
6214            })?
6215            .await?
6216        {
6217            Some(result) => result,
6218            None => return Ok(()),
6219        };
6220
6221        let project = cx.update(|cx| {
6222            project::Project::ssh(
6223                session,
6224                app_state.client.clone(),
6225                app_state.node_runtime.clone(),
6226                app_state.user_store.clone(),
6227                app_state.languages.clone(),
6228                app_state.fs.clone(),
6229                cx,
6230            )
6231        })?;
6232
6233        let toolchains = DB.toolchains(workspace_id).await?;
6234        for (toolchain, worktree_id) in toolchains {
6235            project
6236                .update(&mut cx, |this, cx| {
6237                    this.activate_toolchain(worktree_id, toolchain, cx)
6238                })?
6239                .await;
6240        }
6241        let mut project_paths_to_open = vec![];
6242        let mut project_path_errors = vec![];
6243
6244        for path in paths {
6245            let result = cx
6246                .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))?
6247                .await;
6248            match result {
6249                Ok((_, project_path)) => {
6250                    project_paths_to_open.push((path.clone(), Some(project_path)));
6251                }
6252                Err(error) => {
6253                    project_path_errors.push(error);
6254                }
6255            };
6256        }
6257
6258        if project_paths_to_open.is_empty() {
6259            return Err(project_path_errors
6260                .pop()
6261                .unwrap_or_else(|| anyhow!("no paths given")));
6262        }
6263
6264        cx.update_window(window.into(), |_, window, cx| {
6265            window.replace_root(cx, |window, cx| {
6266                telemetry::event!("SSH Project Opened");
6267
6268                let mut workspace =
6269                    Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
6270                workspace.set_serialized_ssh_project(serialized_ssh_project);
6271                workspace
6272            });
6273        })?;
6274
6275        window
6276            .update(&mut cx, |_, window, cx| {
6277                window.activate_window();
6278
6279                open_items(serialized_workspace, project_paths_to_open, window, cx)
6280            })?
6281            .await?;
6282
6283        window.update(&mut cx, |workspace, _, cx| {
6284            for error in project_path_errors {
6285                if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
6286                    if let Some(path) = error.error_tag("path") {
6287                        workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
6288                    }
6289                } else {
6290                    workspace.show_error(&error, cx)
6291                }
6292            }
6293        })
6294    })
6295}
6296
6297fn serialize_ssh_project(
6298    connection_options: SshConnectionOptions,
6299    paths: Vec<PathBuf>,
6300    cx: &AsyncApp,
6301) -> Task<
6302    Result<(
6303        SerializedSshProject,
6304        WorkspaceId,
6305        Option<SerializedWorkspace>,
6306    )>,
6307> {
6308    cx.background_spawn(async move {
6309        let serialized_ssh_project = persistence::DB
6310            .get_or_create_ssh_project(
6311                connection_options.host.clone(),
6312                connection_options.port,
6313                paths
6314                    .iter()
6315                    .map(|path| path.to_string_lossy().to_string())
6316                    .collect::<Vec<_>>(),
6317                connection_options.username.clone(),
6318            )
6319            .await?;
6320
6321        let serialized_workspace =
6322            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
6323
6324        let workspace_id = if let Some(workspace_id) =
6325            serialized_workspace.as_ref().map(|workspace| workspace.id)
6326        {
6327            workspace_id
6328        } else {
6329            persistence::DB.next_id().await?
6330        };
6331
6332        Ok((serialized_ssh_project, workspace_id, serialized_workspace))
6333    })
6334}
6335
6336pub fn join_in_room_project(
6337    project_id: u64,
6338    follow_user_id: u64,
6339    app_state: Arc<AppState>,
6340    cx: &mut App,
6341) -> Task<Result<()>> {
6342    let windows = cx.windows();
6343    cx.spawn(|mut cx| async move {
6344        let existing_workspace = windows.into_iter().find_map(|window_handle| {
6345            window_handle
6346                .downcast::<Workspace>()
6347                .and_then(|window_handle| {
6348                    window_handle
6349                        .update(&mut cx, |workspace, _window, cx| {
6350                            if workspace.project().read(cx).remote_id() == Some(project_id) {
6351                                Some(window_handle)
6352                            } else {
6353                                None
6354                            }
6355                        })
6356                        .unwrap_or(None)
6357                })
6358        });
6359
6360        let workspace = if let Some(existing_workspace) = existing_workspace {
6361            existing_workspace
6362        } else {
6363            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
6364            let room = active_call
6365                .read_with(&cx, |call, _| call.room().cloned())?
6366                .ok_or_else(|| anyhow!("not in a call"))?;
6367            let project = room
6368                .update(&mut cx, |room, cx| {
6369                    room.join_project(
6370                        project_id,
6371                        app_state.languages.clone(),
6372                        app_state.fs.clone(),
6373                        cx,
6374                    )
6375                })?
6376                .await?;
6377
6378            let window_bounds_override = window_bounds_env_override();
6379            cx.update(|cx| {
6380                let mut options = (app_state.build_window_options)(None, cx);
6381                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
6382                cx.open_window(options, |window, cx| {
6383                    cx.new(|cx| {
6384                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
6385                    })
6386                })
6387            })??
6388        };
6389
6390        workspace.update(&mut cx, |workspace, window, cx| {
6391            cx.activate(true);
6392            window.activate_window();
6393
6394            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
6395                let follow_peer_id = room
6396                    .read(cx)
6397                    .remote_participants()
6398                    .iter()
6399                    .find(|(_, participant)| participant.user.id == follow_user_id)
6400                    .map(|(_, p)| p.peer_id)
6401                    .or_else(|| {
6402                        // If we couldn't follow the given user, follow the host instead.
6403                        let collaborator = workspace
6404                            .project()
6405                            .read(cx)
6406                            .collaborators()
6407                            .values()
6408                            .find(|collaborator| collaborator.is_host)?;
6409                        Some(collaborator.peer_id)
6410                    });
6411
6412                if let Some(follow_peer_id) = follow_peer_id {
6413                    workspace.follow(follow_peer_id, window, cx);
6414                }
6415            }
6416        })?;
6417
6418        anyhow::Ok(())
6419    })
6420}
6421
6422pub fn reload(reload: &Reload, cx: &mut App) {
6423    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
6424    let mut workspace_windows = cx
6425        .windows()
6426        .into_iter()
6427        .filter_map(|window| window.downcast::<Workspace>())
6428        .collect::<Vec<_>>();
6429
6430    // If multiple windows have unsaved changes, and need a save prompt,
6431    // prompt in the active window before switching to a different window.
6432    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
6433
6434    let mut prompt = None;
6435    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
6436        prompt = window
6437            .update(cx, |_, window, cx| {
6438                window.prompt(
6439                    PromptLevel::Info,
6440                    "Are you sure you want to restart?",
6441                    None,
6442                    &["Restart", "Cancel"],
6443                    cx,
6444                )
6445            })
6446            .ok();
6447    }
6448
6449    let binary_path = reload.binary_path.clone();
6450    cx.spawn(|mut cx| async move {
6451        if let Some(prompt) = prompt {
6452            let answer = prompt.await?;
6453            if answer != 0 {
6454                return Ok(());
6455            }
6456        }
6457
6458        // If the user cancels any save prompt, then keep the app open.
6459        for window in workspace_windows {
6460            if let Ok(should_close) = window.update(&mut cx, |workspace, window, cx| {
6461                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
6462            }) {
6463                if !should_close.await? {
6464                    return Ok(());
6465                }
6466            }
6467        }
6468
6469        cx.update(|cx| cx.restart(binary_path))
6470    })
6471    .detach_and_log_err(cx);
6472}
6473
6474fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
6475    let mut parts = value.split(',');
6476    let x: usize = parts.next()?.parse().ok()?;
6477    let y: usize = parts.next()?.parse().ok()?;
6478    Some(point(px(x as f32), px(y as f32)))
6479}
6480
6481fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
6482    let mut parts = value.split(',');
6483    let width: usize = parts.next()?.parse().ok()?;
6484    let height: usize = parts.next()?.parse().ok()?;
6485    Some(size(px(width as f32), px(height as f32)))
6486}
6487
6488pub fn client_side_decorations(
6489    element: impl IntoElement,
6490    window: &mut Window,
6491    cx: &mut App,
6492) -> Stateful<Div> {
6493    const BORDER_SIZE: Pixels = px(1.0);
6494    let decorations = window.window_decorations();
6495
6496    if matches!(decorations, Decorations::Client { .. }) {
6497        window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW);
6498    }
6499
6500    struct GlobalResizeEdge(ResizeEdge);
6501    impl Global for GlobalResizeEdge {}
6502
6503    div()
6504        .id("window-backdrop")
6505        .bg(transparent_black())
6506        .map(|div| match decorations {
6507            Decorations::Server => div,
6508            Decorations::Client { tiling, .. } => div
6509                .when(!(tiling.top || tiling.right), |div| {
6510                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
6511                })
6512                .when(!(tiling.top || tiling.left), |div| {
6513                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
6514                })
6515                .when(!(tiling.bottom || tiling.right), |div| {
6516                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
6517                })
6518                .when(!(tiling.bottom || tiling.left), |div| {
6519                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
6520                })
6521                .when(!tiling.top, |div| {
6522                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
6523                })
6524                .when(!tiling.bottom, |div| {
6525                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
6526                })
6527                .when(!tiling.left, |div| {
6528                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
6529                })
6530                .when(!tiling.right, |div| {
6531                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
6532                })
6533                .on_mouse_move(move |e, window, cx| {
6534                    let size = window.window_bounds().get_bounds().size;
6535                    let pos = e.position;
6536
6537                    let new_edge =
6538                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
6539
6540                    let edge = cx.try_global::<GlobalResizeEdge>();
6541                    if new_edge != edge.map(|edge| edge.0) {
6542                        window
6543                            .window_handle()
6544                            .update(cx, |workspace, _, cx| {
6545                                cx.notify(workspace.entity_id());
6546                            })
6547                            .ok();
6548                    }
6549                })
6550                .on_mouse_down(MouseButton::Left, move |e, window, _| {
6551                    let size = window.window_bounds().get_bounds().size;
6552                    let pos = e.position;
6553
6554                    let edge = match resize_edge(
6555                        pos,
6556                        theme::CLIENT_SIDE_DECORATION_SHADOW,
6557                        size,
6558                        tiling,
6559                    ) {
6560                        Some(value) => value,
6561                        None => return,
6562                    };
6563
6564                    window.start_window_resize(edge);
6565                }),
6566        })
6567        .size_full()
6568        .child(
6569            div()
6570                .cursor(CursorStyle::Arrow)
6571                .map(|div| match decorations {
6572                    Decorations::Server => div,
6573                    Decorations::Client { tiling } => div
6574                        .border_color(cx.theme().colors().border)
6575                        .when(!(tiling.top || tiling.right), |div| {
6576                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
6577                        })
6578                        .when(!(tiling.top || tiling.left), |div| {
6579                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
6580                        })
6581                        .when(!(tiling.bottom || tiling.right), |div| {
6582                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
6583                        })
6584                        .when(!(tiling.bottom || tiling.left), |div| {
6585                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
6586                        })
6587                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
6588                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
6589                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
6590                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
6591                        .when(!tiling.is_tiled(), |div| {
6592                            div.shadow(smallvec::smallvec![gpui::BoxShadow {
6593                                color: Hsla {
6594                                    h: 0.,
6595                                    s: 0.,
6596                                    l: 0.,
6597                                    a: 0.4,
6598                                },
6599                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
6600                                spread_radius: px(0.),
6601                                offset: point(px(0.0), px(0.0)),
6602                            }])
6603                        }),
6604                })
6605                .on_mouse_move(|_e, _, cx| {
6606                    cx.stop_propagation();
6607                })
6608                .size_full()
6609                .child(element),
6610        )
6611        .map(|div| match decorations {
6612            Decorations::Server => div,
6613            Decorations::Client { tiling, .. } => div.child(
6614                canvas(
6615                    |_bounds, window, _| {
6616                        window.insert_hitbox(
6617                            Bounds::new(
6618                                point(px(0.0), px(0.0)),
6619                                window.window_bounds().get_bounds().size,
6620                            ),
6621                            false,
6622                        )
6623                    },
6624                    move |_bounds, hitbox, window, cx| {
6625                        let mouse = window.mouse_position();
6626                        let size = window.window_bounds().get_bounds().size;
6627                        let Some(edge) =
6628                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
6629                        else {
6630                            return;
6631                        };
6632                        cx.set_global(GlobalResizeEdge(edge));
6633                        window.set_cursor_style(
6634                            match edge {
6635                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
6636                                ResizeEdge::Left | ResizeEdge::Right => {
6637                                    CursorStyle::ResizeLeftRight
6638                                }
6639                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
6640                                    CursorStyle::ResizeUpLeftDownRight
6641                                }
6642                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
6643                                    CursorStyle::ResizeUpRightDownLeft
6644                                }
6645                            },
6646                            &hitbox,
6647                        );
6648                    },
6649                )
6650                .size_full()
6651                .absolute(),
6652            ),
6653        })
6654}
6655
6656fn resize_edge(
6657    pos: Point<Pixels>,
6658    shadow_size: Pixels,
6659    window_size: Size<Pixels>,
6660    tiling: Tiling,
6661) -> Option<ResizeEdge> {
6662    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
6663    if bounds.contains(&pos) {
6664        return None;
6665    }
6666
6667    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
6668    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
6669    if !tiling.top && top_left_bounds.contains(&pos) {
6670        return Some(ResizeEdge::TopLeft);
6671    }
6672
6673    let top_right_bounds = Bounds::new(
6674        Point::new(window_size.width - corner_size.width, px(0.)),
6675        corner_size,
6676    );
6677    if !tiling.top && top_right_bounds.contains(&pos) {
6678        return Some(ResizeEdge::TopRight);
6679    }
6680
6681    let bottom_left_bounds = Bounds::new(
6682        Point::new(px(0.), window_size.height - corner_size.height),
6683        corner_size,
6684    );
6685    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
6686        return Some(ResizeEdge::BottomLeft);
6687    }
6688
6689    let bottom_right_bounds = Bounds::new(
6690        Point::new(
6691            window_size.width - corner_size.width,
6692            window_size.height - corner_size.height,
6693        ),
6694        corner_size,
6695    );
6696    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
6697        return Some(ResizeEdge::BottomRight);
6698    }
6699
6700    if !tiling.top && pos.y < shadow_size {
6701        Some(ResizeEdge::Top)
6702    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
6703        Some(ResizeEdge::Bottom)
6704    } else if !tiling.left && pos.x < shadow_size {
6705        Some(ResizeEdge::Left)
6706    } else if !tiling.right && pos.x > window_size.width - shadow_size {
6707        Some(ResizeEdge::Right)
6708    } else {
6709        None
6710    }
6711}
6712
6713fn join_pane_into_active(
6714    active_pane: &Entity<Pane>,
6715    pane: &Entity<Pane>,
6716    window: &mut Window,
6717    cx: &mut App,
6718) {
6719    if pane == active_pane {
6720        return;
6721    } else if pane.read(cx).items_len() == 0 {
6722        pane.update(cx, |_, cx| {
6723            cx.emit(pane::Event::Remove {
6724                focus_on_pane: None,
6725            });
6726        })
6727    } else {
6728        move_all_items(pane, active_pane, window, cx);
6729    }
6730}
6731
6732fn move_all_items(
6733    from_pane: &Entity<Pane>,
6734    to_pane: &Entity<Pane>,
6735    window: &mut Window,
6736    cx: &mut App,
6737) {
6738    let destination_is_different = from_pane != to_pane;
6739    let mut moved_items = 0;
6740    for (item_ix, item_handle) in from_pane
6741        .read(cx)
6742        .items()
6743        .enumerate()
6744        .map(|(ix, item)| (ix, item.clone()))
6745        .collect::<Vec<_>>()
6746    {
6747        let ix = item_ix - moved_items;
6748        if destination_is_different {
6749            // Close item from previous pane
6750            from_pane.update(cx, |source, cx| {
6751                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
6752            });
6753            moved_items += 1;
6754        }
6755
6756        // This automatically removes duplicate items in the pane
6757        to_pane.update(cx, |destination, cx| {
6758            destination.add_item(item_handle, true, true, None, window, cx);
6759            window.focus(&destination.focus_handle(cx))
6760        });
6761    }
6762}
6763
6764pub fn move_item(
6765    source: &Entity<Pane>,
6766    destination: &Entity<Pane>,
6767    item_id_to_move: EntityId,
6768    destination_index: usize,
6769    window: &mut Window,
6770    cx: &mut App,
6771) {
6772    let Some((item_ix, item_handle)) = source
6773        .read(cx)
6774        .items()
6775        .enumerate()
6776        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
6777        .map(|(ix, item)| (ix, item.clone()))
6778    else {
6779        // Tab was closed during drag
6780        return;
6781    };
6782
6783    if source != destination {
6784        // Close item from previous pane
6785        source.update(cx, |source, cx| {
6786            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
6787        });
6788    }
6789
6790    // This automatically removes duplicate items in the pane
6791    destination.update(cx, |destination, cx| {
6792        destination.add_item(item_handle, true, true, Some(destination_index), window, cx);
6793        window.focus(&destination.focus_handle(cx))
6794    });
6795}
6796
6797pub fn move_active_item(
6798    source: &Entity<Pane>,
6799    destination: &Entity<Pane>,
6800    focus_destination: bool,
6801    close_if_empty: bool,
6802    window: &mut Window,
6803    cx: &mut App,
6804) {
6805    if source == destination {
6806        return;
6807    }
6808    let Some(active_item) = source.read(cx).active_item() else {
6809        return;
6810    };
6811    source.update(cx, |source_pane, cx| {
6812        let item_id = active_item.item_id();
6813        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
6814        destination.update(cx, |target_pane, cx| {
6815            target_pane.add_item(
6816                active_item,
6817                focus_destination,
6818                focus_destination,
6819                Some(target_pane.items_len()),
6820                window,
6821                cx,
6822            );
6823        });
6824    });
6825}
6826
6827#[cfg(test)]
6828mod tests {
6829    use std::{cell::RefCell, rc::Rc};
6830
6831    use super::*;
6832    use crate::{
6833        dock::{test::TestPanel, PanelEvent},
6834        item::{
6835            test::{TestItem, TestProjectItem},
6836            ItemEvent,
6837        },
6838    };
6839    use fs::FakeFs;
6840    use gpui::{
6841        px, DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
6842        UpdateGlobal, VisualTestContext,
6843    };
6844    use project::{Project, ProjectEntryId};
6845    use serde_json::json;
6846    use settings::SettingsStore;
6847
6848    #[gpui::test]
6849    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
6850        init_test(cx);
6851
6852        let fs = FakeFs::new(cx.executor());
6853        let project = Project::test(fs, [], cx).await;
6854        let (workspace, cx) =
6855            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
6856
6857        // Adding an item with no ambiguity renders the tab without detail.
6858        let item1 = cx.new(|cx| {
6859            let mut item = TestItem::new(cx);
6860            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
6861            item
6862        });
6863        workspace.update_in(cx, |workspace, window, cx| {
6864            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
6865        });
6866        item1.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
6867
6868        // Adding an item that creates ambiguity increases the level of detail on
6869        // both tabs.
6870        let item2 = cx.new_window_entity(|_window, cx| {
6871            let mut item = TestItem::new(cx);
6872            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
6873            item
6874        });
6875        workspace.update_in(cx, |workspace, window, cx| {
6876            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
6877        });
6878        item1.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
6879        item2.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
6880
6881        // Adding an item that creates ambiguity increases the level of detail only
6882        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
6883        // we stop at the highest detail available.
6884        let item3 = cx.new(|cx| {
6885            let mut item = TestItem::new(cx);
6886            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
6887            item
6888        });
6889        workspace.update_in(cx, |workspace, window, cx| {
6890            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
6891        });
6892        item1.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
6893        item2.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
6894        item3.update(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
6895    }
6896
6897    #[gpui::test]
6898    async fn test_tracking_active_path(cx: &mut TestAppContext) {
6899        init_test(cx);
6900
6901        let fs = FakeFs::new(cx.executor());
6902        fs.insert_tree(
6903            "/root1",
6904            json!({
6905                "one.txt": "",
6906                "two.txt": "",
6907            }),
6908        )
6909        .await;
6910        fs.insert_tree(
6911            "/root2",
6912            json!({
6913                "three.txt": "",
6914            }),
6915        )
6916        .await;
6917
6918        let project = Project::test(fs, ["root1".as_ref()], cx).await;
6919        let (workspace, cx) =
6920            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
6921        let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
6922        let worktree_id = project.update(cx, |project, cx| {
6923            project.worktrees(cx).next().unwrap().read(cx).id()
6924        });
6925
6926        let item1 = cx.new(|cx| {
6927            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
6928        });
6929        let item2 = cx.new(|cx| {
6930            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
6931        });
6932
6933        // Add an item to an empty pane
6934        workspace.update_in(cx, |workspace, window, cx| {
6935            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
6936        });
6937        project.update(cx, |project, cx| {
6938            assert_eq!(
6939                project.active_entry(),
6940                project
6941                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
6942                    .map(|e| e.id)
6943            );
6944        });
6945        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
6946
6947        // Add a second item to a non-empty pane
6948        workspace.update_in(cx, |workspace, window, cx| {
6949            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
6950        });
6951        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
6952        project.update(cx, |project, cx| {
6953            assert_eq!(
6954                project.active_entry(),
6955                project
6956                    .entry_for_path(&(worktree_id, "two.txt").into(), cx)
6957                    .map(|e| e.id)
6958            );
6959        });
6960
6961        // Close the active item
6962        pane.update_in(cx, |pane, window, cx| {
6963            pane.close_active_item(&Default::default(), window, cx)
6964                .unwrap()
6965        })
6966        .await
6967        .unwrap();
6968        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
6969        project.update(cx, |project, cx| {
6970            assert_eq!(
6971                project.active_entry(),
6972                project
6973                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
6974                    .map(|e| e.id)
6975            );
6976        });
6977
6978        // Add a project folder
6979        project
6980            .update(cx, |project, cx| {
6981                project.find_or_create_worktree("root2", true, cx)
6982            })
6983            .await
6984            .unwrap();
6985        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
6986
6987        // Remove a project folder
6988        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
6989        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
6990    }
6991
6992    #[gpui::test]
6993    async fn test_close_window(cx: &mut TestAppContext) {
6994        init_test(cx);
6995
6996        let fs = FakeFs::new(cx.executor());
6997        fs.insert_tree("/root", json!({ "one": "" })).await;
6998
6999        let project = Project::test(fs, ["root".as_ref()], cx).await;
7000        let (workspace, cx) =
7001            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
7002
7003        // When there are no dirty items, there's nothing to do.
7004        let item1 = cx.new(TestItem::new);
7005        workspace.update_in(cx, |w, window, cx| {
7006            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
7007        });
7008        let task = workspace.update_in(cx, |w, window, cx| {
7009            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
7010        });
7011        assert!(task.await.unwrap());
7012
7013        // When there are dirty untitled items, prompt to save each one. If the user
7014        // cancels any prompt, then abort.
7015        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
7016        let item3 = cx.new(|cx| {
7017            TestItem::new(cx)
7018                .with_dirty(true)
7019                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
7020        });
7021        workspace.update_in(cx, |w, window, cx| {
7022            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
7023            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
7024        });
7025        let task = workspace.update_in(cx, |w, window, cx| {
7026            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
7027        });
7028        cx.executor().run_until_parked();
7029        cx.simulate_prompt_answer("Cancel"); // cancel save all
7030        cx.executor().run_until_parked();
7031        assert!(!cx.has_pending_prompt());
7032        assert!(!task.await.unwrap());
7033    }
7034
7035    #[gpui::test]
7036    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
7037        init_test(cx);
7038
7039        // Register TestItem as a serializable item
7040        cx.update(|cx| {
7041            register_serializable_item::<TestItem>(cx);
7042        });
7043
7044        let fs = FakeFs::new(cx.executor());
7045        fs.insert_tree("/root", json!({ "one": "" })).await;
7046
7047        let project = Project::test(fs, ["root".as_ref()], cx).await;
7048        let (workspace, cx) =
7049            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
7050
7051        // When there are dirty untitled items, but they can serialize, then there is no prompt.
7052        let item1 = cx.new(|cx| {
7053            TestItem::new(cx)
7054                .with_dirty(true)
7055                .with_serialize(|| Some(Task::ready(Ok(()))))
7056        });
7057        let item2 = cx.new(|cx| {
7058            TestItem::new(cx)
7059                .with_dirty(true)
7060                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
7061                .with_serialize(|| Some(Task::ready(Ok(()))))
7062        });
7063        workspace.update_in(cx, |w, window, cx| {
7064            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
7065            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
7066        });
7067        let task = workspace.update_in(cx, |w, window, cx| {
7068            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
7069        });
7070        assert!(task.await.unwrap());
7071    }
7072
7073    #[gpui::test]
7074    async fn test_close_pane_items(cx: &mut TestAppContext) {
7075        init_test(cx);
7076
7077        let fs = FakeFs::new(cx.executor());
7078
7079        let project = Project::test(fs, None, cx).await;
7080        let (workspace, cx) =
7081            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
7082
7083        let item1 = cx.new(|cx| {
7084            TestItem::new(cx)
7085                .with_dirty(true)
7086                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
7087        });
7088        let item2 = cx.new(|cx| {
7089            TestItem::new(cx)
7090                .with_dirty(true)
7091                .with_conflict(true)
7092                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
7093        });
7094        let item3 = cx.new(|cx| {
7095            TestItem::new(cx)
7096                .with_dirty(true)
7097                .with_conflict(true)
7098                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
7099        });
7100        let item4 = cx.new(|cx| {
7101            TestItem::new(cx).with_dirty(true).with_project_items(&[{
7102                let project_item = TestProjectItem::new_untitled(cx);
7103                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
7104                project_item
7105            }])
7106        });
7107        let pane = workspace.update_in(cx, |workspace, window, cx| {
7108            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
7109            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
7110            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
7111            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
7112            workspace.active_pane().clone()
7113        });
7114
7115        let close_items = pane.update_in(cx, |pane, window, cx| {
7116            pane.activate_item(1, true, true, window, cx);
7117            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
7118            let item1_id = item1.item_id();
7119            let item3_id = item3.item_id();
7120            let item4_id = item4.item_id();
7121            pane.close_items(window, cx, SaveIntent::Close, move |id| {
7122                [item1_id, item3_id, item4_id].contains(&id)
7123            })
7124        });
7125        cx.executor().run_until_parked();
7126
7127        assert!(cx.has_pending_prompt());
7128        cx.simulate_prompt_answer("Save all");
7129
7130        cx.executor().run_until_parked();
7131
7132        // Item 1 is saved. There's a prompt to save item 3.
7133        pane.update(cx, |pane, cx| {
7134            assert_eq!(item1.read(cx).save_count, 1);
7135            assert_eq!(item1.read(cx).save_as_count, 0);
7136            assert_eq!(item1.read(cx).reload_count, 0);
7137            assert_eq!(pane.items_len(), 3);
7138            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
7139        });
7140        assert!(cx.has_pending_prompt());
7141
7142        // Cancel saving item 3.
7143        cx.simulate_prompt_answer("Discard");
7144        cx.executor().run_until_parked();
7145
7146        // Item 3 is reloaded. There's a prompt to save item 4.
7147        pane.update(cx, |pane, cx| {
7148            assert_eq!(item3.read(cx).save_count, 0);
7149            assert_eq!(item3.read(cx).save_as_count, 0);
7150            assert_eq!(item3.read(cx).reload_count, 1);
7151            assert_eq!(pane.items_len(), 2);
7152            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
7153        });
7154
7155        // There's a prompt for a path for item 4.
7156        cx.simulate_new_path_selection(|_| Some(Default::default()));
7157        close_items.await.unwrap();
7158
7159        // The requested items are closed.
7160        pane.update(cx, |pane, cx| {
7161            assert_eq!(item4.read(cx).save_count, 0);
7162            assert_eq!(item4.read(cx).save_as_count, 1);
7163            assert_eq!(item4.read(cx).reload_count, 0);
7164            assert_eq!(pane.items_len(), 1);
7165            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
7166        });
7167    }
7168
7169    #[gpui::test]
7170    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
7171        init_test(cx);
7172
7173        let fs = FakeFs::new(cx.executor());
7174        let project = Project::test(fs, [], cx).await;
7175        let (workspace, cx) =
7176            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
7177
7178        // Create several workspace items with single project entries, and two
7179        // workspace items with multiple project entries.
7180        let single_entry_items = (0..=4)
7181            .map(|project_entry_id| {
7182                cx.new(|cx| {
7183                    TestItem::new(cx)
7184                        .with_dirty(true)
7185                        .with_project_items(&[dirty_project_item(
7186                            project_entry_id,
7187                            &format!("{project_entry_id}.txt"),
7188                            cx,
7189                        )])
7190                })
7191            })
7192            .collect::<Vec<_>>();
7193        let item_2_3 = cx.new(|cx| {
7194            TestItem::new(cx)
7195                .with_dirty(true)
7196                .with_singleton(false)
7197                .with_project_items(&[
7198                    single_entry_items[2].read(cx).project_items[0].clone(),
7199                    single_entry_items[3].read(cx).project_items[0].clone(),
7200                ])
7201        });
7202        let item_3_4 = cx.new(|cx| {
7203            TestItem::new(cx)
7204                .with_dirty(true)
7205                .with_singleton(false)
7206                .with_project_items(&[
7207                    single_entry_items[3].read(cx).project_items[0].clone(),
7208                    single_entry_items[4].read(cx).project_items[0].clone(),
7209                ])
7210        });
7211
7212        // Create two panes that contain the following project entries:
7213        //   left pane:
7214        //     multi-entry items:   (2, 3)
7215        //     single-entry items:  0, 2, 3, 4
7216        //   right pane:
7217        //     single-entry items:  4, 1
7218        //     multi-entry items:   (3, 4)
7219        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
7220            let left_pane = workspace.active_pane().clone();
7221            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
7222            workspace.add_item_to_active_pane(
7223                single_entry_items[0].boxed_clone(),
7224                None,
7225                true,
7226                window,
7227                cx,
7228            );
7229            workspace.add_item_to_active_pane(
7230                single_entry_items[2].boxed_clone(),
7231                None,
7232                true,
7233                window,
7234                cx,
7235            );
7236            workspace.add_item_to_active_pane(
7237                single_entry_items[3].boxed_clone(),
7238                None,
7239                true,
7240                window,
7241                cx,
7242            );
7243            workspace.add_item_to_active_pane(
7244                single_entry_items[4].boxed_clone(),
7245                None,
7246                true,
7247                window,
7248                cx,
7249            );
7250
7251            let right_pane = workspace
7252                .split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx)
7253                .unwrap();
7254
7255            right_pane.update(cx, |pane, cx| {
7256                pane.add_item(
7257                    single_entry_items[1].boxed_clone(),
7258                    true,
7259                    true,
7260                    None,
7261                    window,
7262                    cx,
7263                );
7264                pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
7265            });
7266
7267            (left_pane, right_pane)
7268        });
7269
7270        cx.focus(&right_pane);
7271
7272        let mut close = right_pane.update_in(cx, |pane, window, cx| {
7273            pane.close_all_items(&CloseAllItems::default(), window, cx)
7274                .unwrap()
7275        });
7276        cx.executor().run_until_parked();
7277
7278        let msg = cx.pending_prompt().unwrap().0;
7279        assert!(msg.contains("1.txt"));
7280        assert!(!msg.contains("2.txt"));
7281        assert!(!msg.contains("3.txt"));
7282        assert!(!msg.contains("4.txt"));
7283
7284        cx.simulate_prompt_answer("Cancel");
7285        close.await.unwrap();
7286
7287        left_pane
7288            .update_in(cx, |left_pane, window, cx| {
7289                left_pane.close_item_by_id(
7290                    single_entry_items[3].entity_id(),
7291                    SaveIntent::Skip,
7292                    window,
7293                    cx,
7294                )
7295            })
7296            .await
7297            .unwrap();
7298
7299        close = right_pane.update_in(cx, |pane, window, cx| {
7300            pane.close_all_items(&CloseAllItems::default(), window, cx)
7301                .unwrap()
7302        });
7303        cx.executor().run_until_parked();
7304
7305        let details = cx.pending_prompt().unwrap().1;
7306        assert!(details.contains("1.txt"));
7307        assert!(!details.contains("2.txt"));
7308        assert!(details.contains("3.txt"));
7309        // ideally this assertion could be made, but today we can only
7310        // save whole items not project items, so the orphaned item 3 causes
7311        // 4 to be saved too.
7312        // assert!(!details.contains("4.txt"));
7313
7314        cx.simulate_prompt_answer("Save all");
7315
7316        cx.executor().run_until_parked();
7317        close.await.unwrap();
7318        right_pane.update(cx, |pane, _| {
7319            assert_eq!(pane.items_len(), 0);
7320        });
7321    }
7322
7323    #[gpui::test]
7324    async fn test_autosave(cx: &mut gpui::TestAppContext) {
7325        init_test(cx);
7326
7327        let fs = FakeFs::new(cx.executor());
7328        let project = Project::test(fs, [], cx).await;
7329        let (workspace, cx) =
7330            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
7331        let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
7332
7333        let item = cx.new(|cx| {
7334            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
7335        });
7336        let item_id = item.entity_id();
7337        workspace.update_in(cx, |workspace, window, cx| {
7338            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
7339        });
7340
7341        // Autosave on window change.
7342        item.update(cx, |item, cx| {
7343            SettingsStore::update_global(cx, |settings, cx| {
7344                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
7345                    settings.autosave = Some(AutosaveSetting::OnWindowChange);
7346                })
7347            });
7348            item.is_dirty = true;
7349        });
7350
7351        // Deactivating the window saves the file.
7352        cx.deactivate_window();
7353        item.update(cx, |item, _| assert_eq!(item.save_count, 1));
7354
7355        // Re-activating the window doesn't save the file.
7356        cx.update(|window, _| window.activate_window());
7357        cx.executor().run_until_parked();
7358        item.update(cx, |item, _| assert_eq!(item.save_count, 1));
7359
7360        // Autosave on focus change.
7361        item.update_in(cx, |item, window, cx| {
7362            cx.focus_self(window);
7363            SettingsStore::update_global(cx, |settings, cx| {
7364                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
7365                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
7366                })
7367            });
7368            item.is_dirty = true;
7369        });
7370
7371        // Blurring the item saves the file.
7372        item.update_in(cx, |_, window, _| window.blur());
7373        cx.executor().run_until_parked();
7374        item.update(cx, |item, _| assert_eq!(item.save_count, 2));
7375
7376        // Deactivating the window still saves the file.
7377        item.update_in(cx, |item, window, cx| {
7378            cx.focus_self(window);
7379            item.is_dirty = true;
7380        });
7381        cx.deactivate_window();
7382        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
7383
7384        // Autosave after delay.
7385        item.update(cx, |item, cx| {
7386            SettingsStore::update_global(cx, |settings, cx| {
7387                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
7388                    settings.autosave = Some(AutosaveSetting::AfterDelay { milliseconds: 500 });
7389                })
7390            });
7391            item.is_dirty = true;
7392            cx.emit(ItemEvent::Edit);
7393        });
7394
7395        // Delay hasn't fully expired, so the file is still dirty and unsaved.
7396        cx.executor().advance_clock(Duration::from_millis(250));
7397        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
7398
7399        // After delay expires, the file is saved.
7400        cx.executor().advance_clock(Duration::from_millis(250));
7401        item.update(cx, |item, _| assert_eq!(item.save_count, 4));
7402
7403        // Autosave on focus change, ensuring closing the tab counts as such.
7404        item.update(cx, |item, cx| {
7405            SettingsStore::update_global(cx, |settings, cx| {
7406                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
7407                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
7408                })
7409            });
7410            item.is_dirty = true;
7411            for project_item in &mut item.project_items {
7412                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
7413            }
7414        });
7415
7416        pane.update_in(cx, |pane, window, cx| {
7417            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
7418        })
7419        .await
7420        .unwrap();
7421        assert!(!cx.has_pending_prompt());
7422        item.update(cx, |item, _| assert_eq!(item.save_count, 5));
7423
7424        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
7425        workspace.update_in(cx, |workspace, window, cx| {
7426            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
7427        });
7428        item.update_in(cx, |item, window, cx| {
7429            item.project_items[0].update(cx, |item, _| {
7430                item.entry_id = None;
7431            });
7432            item.is_dirty = true;
7433            window.blur();
7434        });
7435        cx.run_until_parked();
7436        item.update(cx, |item, _| assert_eq!(item.save_count, 5));
7437
7438        // Ensure autosave is prevented for deleted files also when closing the buffer.
7439        let _close_items = pane.update_in(cx, |pane, window, cx| {
7440            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
7441        });
7442        cx.run_until_parked();
7443        assert!(cx.has_pending_prompt());
7444        item.update(cx, |item, _| assert_eq!(item.save_count, 5));
7445    }
7446
7447    #[gpui::test]
7448    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
7449        init_test(cx);
7450
7451        let fs = FakeFs::new(cx.executor());
7452
7453        let project = Project::test(fs, [], cx).await;
7454        let (workspace, cx) =
7455            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
7456
7457        let item = cx.new(|cx| {
7458            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
7459        });
7460        let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
7461        let toolbar = pane.update(cx, |pane, _| pane.toolbar().clone());
7462        let toolbar_notify_count = Rc::new(RefCell::new(0));
7463
7464        workspace.update_in(cx, |workspace, window, cx| {
7465            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
7466            let toolbar_notification_count = toolbar_notify_count.clone();
7467            cx.observe_in(&toolbar, window, move |_, _, _, _| {
7468                *toolbar_notification_count.borrow_mut() += 1
7469            })
7470            .detach();
7471        });
7472
7473        pane.update(cx, |pane, _| {
7474            assert!(!pane.can_navigate_backward());
7475            assert!(!pane.can_navigate_forward());
7476        });
7477
7478        item.update_in(cx, |item, _, cx| {
7479            item.set_state("one".to_string(), cx);
7480        });
7481
7482        // Toolbar must be notified to re-render the navigation buttons
7483        assert_eq!(*toolbar_notify_count.borrow(), 1);
7484
7485        pane.update(cx, |pane, _| {
7486            assert!(pane.can_navigate_backward());
7487            assert!(!pane.can_navigate_forward());
7488        });
7489
7490        workspace
7491            .update_in(cx, |workspace, window, cx| {
7492                workspace.go_back(pane.downgrade(), window, cx)
7493            })
7494            .await
7495            .unwrap();
7496
7497        assert_eq!(*toolbar_notify_count.borrow(), 2);
7498        pane.update(cx, |pane, _| {
7499            assert!(!pane.can_navigate_backward());
7500            assert!(pane.can_navigate_forward());
7501        });
7502    }
7503
7504    #[gpui::test]
7505    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
7506        init_test(cx);
7507        let fs = FakeFs::new(cx.executor());
7508
7509        let project = Project::test(fs, [], cx).await;
7510        let (workspace, cx) =
7511            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
7512
7513        let panel = workspace.update_in(cx, |workspace, window, cx| {
7514            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
7515            workspace.add_panel(panel.clone(), window, cx);
7516
7517            workspace
7518                .right_dock()
7519                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
7520
7521            panel
7522        });
7523
7524        let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
7525        pane.update_in(cx, |pane, window, cx| {
7526            let item = cx.new(TestItem::new);
7527            pane.add_item(Box::new(item), true, true, None, window, cx);
7528        });
7529
7530        // Transfer focus from center to panel
7531        workspace.update_in(cx, |workspace, window, cx| {
7532            workspace.toggle_panel_focus::<TestPanel>(window, cx);
7533        });
7534
7535        workspace.update_in(cx, |workspace, window, cx| {
7536            assert!(workspace.right_dock().read(cx).is_open());
7537            assert!(!panel.is_zoomed(window, cx));
7538            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
7539        });
7540
7541        // Transfer focus from panel to center
7542        workspace.update_in(cx, |workspace, window, cx| {
7543            workspace.toggle_panel_focus::<TestPanel>(window, cx);
7544        });
7545
7546        workspace.update_in(cx, |workspace, window, cx| {
7547            assert!(workspace.right_dock().read(cx).is_open());
7548            assert!(!panel.is_zoomed(window, cx));
7549            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
7550        });
7551
7552        // Close the dock
7553        workspace.update_in(cx, |workspace, window, cx| {
7554            workspace.toggle_dock(DockPosition::Right, window, cx);
7555        });
7556
7557        workspace.update_in(cx, |workspace, window, cx| {
7558            assert!(!workspace.right_dock().read(cx).is_open());
7559            assert!(!panel.is_zoomed(window, cx));
7560            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
7561        });
7562
7563        // Open the dock
7564        workspace.update_in(cx, |workspace, window, cx| {
7565            workspace.toggle_dock(DockPosition::Right, window, cx);
7566        });
7567
7568        workspace.update_in(cx, |workspace, window, cx| {
7569            assert!(workspace.right_dock().read(cx).is_open());
7570            assert!(!panel.is_zoomed(window, cx));
7571            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
7572        });
7573
7574        // Focus and zoom panel
7575        panel.update_in(cx, |panel, window, cx| {
7576            cx.focus_self(window);
7577            panel.set_zoomed(true, window, cx)
7578        });
7579
7580        workspace.update_in(cx, |workspace, window, cx| {
7581            assert!(workspace.right_dock().read(cx).is_open());
7582            assert!(panel.is_zoomed(window, cx));
7583            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
7584        });
7585
7586        // Transfer focus to the center closes the dock
7587        workspace.update_in(cx, |workspace, window, cx| {
7588            workspace.toggle_panel_focus::<TestPanel>(window, cx);
7589        });
7590
7591        workspace.update_in(cx, |workspace, window, cx| {
7592            assert!(!workspace.right_dock().read(cx).is_open());
7593            assert!(panel.is_zoomed(window, cx));
7594            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
7595        });
7596
7597        // Transferring focus back to the panel keeps it zoomed
7598        workspace.update_in(cx, |workspace, window, cx| {
7599            workspace.toggle_panel_focus::<TestPanel>(window, cx);
7600        });
7601
7602        workspace.update_in(cx, |workspace, window, cx| {
7603            assert!(workspace.right_dock().read(cx).is_open());
7604            assert!(panel.is_zoomed(window, cx));
7605            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
7606        });
7607
7608        // Close the dock while it is zoomed
7609        workspace.update_in(cx, |workspace, window, cx| {
7610            workspace.toggle_dock(DockPosition::Right, window, cx)
7611        });
7612
7613        workspace.update_in(cx, |workspace, window, cx| {
7614            assert!(!workspace.right_dock().read(cx).is_open());
7615            assert!(panel.is_zoomed(window, cx));
7616            assert!(workspace.zoomed.is_none());
7617            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
7618        });
7619
7620        // Opening the dock, when it's zoomed, retains focus
7621        workspace.update_in(cx, |workspace, window, cx| {
7622            workspace.toggle_dock(DockPosition::Right, window, cx)
7623        });
7624
7625        workspace.update_in(cx, |workspace, window, cx| {
7626            assert!(workspace.right_dock().read(cx).is_open());
7627            assert!(panel.is_zoomed(window, cx));
7628            assert!(workspace.zoomed.is_some());
7629            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
7630        });
7631
7632        // Unzoom and close the panel, zoom the active pane.
7633        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
7634        workspace.update_in(cx, |workspace, window, cx| {
7635            workspace.toggle_dock(DockPosition::Right, window, cx)
7636        });
7637        pane.update_in(cx, |pane, window, cx| {
7638            pane.toggle_zoom(&Default::default(), window, cx)
7639        });
7640
7641        // Opening a dock unzooms the pane.
7642        workspace.update_in(cx, |workspace, window, cx| {
7643            workspace.toggle_dock(DockPosition::Right, window, cx)
7644        });
7645        workspace.update_in(cx, |workspace, window, cx| {
7646            let pane = pane.read(cx);
7647            assert!(!pane.is_zoomed());
7648            assert!(!pane.focus_handle(cx).is_focused(window));
7649            assert!(workspace.right_dock().read(cx).is_open());
7650            assert!(workspace.zoomed.is_none());
7651        });
7652    }
7653
7654    #[gpui::test]
7655    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
7656        init_test(cx);
7657
7658        let fs = FakeFs::new(cx.executor());
7659
7660        let project = Project::test(fs, None, cx).await;
7661        let (workspace, cx) =
7662            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
7663
7664        // Let's arrange the panes like this:
7665        //
7666        // +-----------------------+
7667        // |         top           |
7668        // +------+--------+-------+
7669        // | left | center | right |
7670        // +------+--------+-------+
7671        // |        bottom         |
7672        // +-----------------------+
7673
7674        let top_item = cx.new(|cx| {
7675            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
7676        });
7677        let bottom_item = cx.new(|cx| {
7678            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
7679        });
7680        let left_item = cx.new(|cx| {
7681            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
7682        });
7683        let right_item = cx.new(|cx| {
7684            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
7685        });
7686        let center_item = cx.new(|cx| {
7687            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
7688        });
7689
7690        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
7691            let top_pane_id = workspace.active_pane().entity_id();
7692            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
7693            workspace.split_pane(
7694                workspace.active_pane().clone(),
7695                SplitDirection::Down,
7696                window,
7697                cx,
7698            );
7699            top_pane_id
7700        });
7701        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
7702            let bottom_pane_id = workspace.active_pane().entity_id();
7703            workspace.add_item_to_active_pane(
7704                Box::new(bottom_item.clone()),
7705                None,
7706                false,
7707                window,
7708                cx,
7709            );
7710            workspace.split_pane(
7711                workspace.active_pane().clone(),
7712                SplitDirection::Up,
7713                window,
7714                cx,
7715            );
7716            bottom_pane_id
7717        });
7718        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
7719            let left_pane_id = workspace.active_pane().entity_id();
7720            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
7721            workspace.split_pane(
7722                workspace.active_pane().clone(),
7723                SplitDirection::Right,
7724                window,
7725                cx,
7726            );
7727            left_pane_id
7728        });
7729        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
7730            let right_pane_id = workspace.active_pane().entity_id();
7731            workspace.add_item_to_active_pane(
7732                Box::new(right_item.clone()),
7733                None,
7734                false,
7735                window,
7736                cx,
7737            );
7738            workspace.split_pane(
7739                workspace.active_pane().clone(),
7740                SplitDirection::Left,
7741                window,
7742                cx,
7743            );
7744            right_pane_id
7745        });
7746        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
7747            let center_pane_id = workspace.active_pane().entity_id();
7748            workspace.add_item_to_active_pane(
7749                Box::new(center_item.clone()),
7750                None,
7751                false,
7752                window,
7753                cx,
7754            );
7755            center_pane_id
7756        });
7757        cx.executor().run_until_parked();
7758
7759        workspace.update_in(cx, |workspace, window, cx| {
7760            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
7761
7762            // Join into next from center pane into right
7763            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
7764        });
7765
7766        workspace.update_in(cx, |workspace, window, cx| {
7767            let active_pane = workspace.active_pane();
7768            assert_eq!(right_pane_id, active_pane.entity_id());
7769            assert_eq!(2, active_pane.read(cx).items_len());
7770            let item_ids_in_pane =
7771                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
7772            assert!(item_ids_in_pane.contains(&center_item.item_id()));
7773            assert!(item_ids_in_pane.contains(&right_item.item_id()));
7774
7775            // Join into next from right pane into bottom
7776            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
7777        });
7778
7779        workspace.update_in(cx, |workspace, window, cx| {
7780            let active_pane = workspace.active_pane();
7781            assert_eq!(bottom_pane_id, active_pane.entity_id());
7782            assert_eq!(3, active_pane.read(cx).items_len());
7783            let item_ids_in_pane =
7784                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
7785            assert!(item_ids_in_pane.contains(&center_item.item_id()));
7786            assert!(item_ids_in_pane.contains(&right_item.item_id()));
7787            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
7788
7789            // Join into next from bottom pane into left
7790            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
7791        });
7792
7793        workspace.update_in(cx, |workspace, window, cx| {
7794            let active_pane = workspace.active_pane();
7795            assert_eq!(left_pane_id, active_pane.entity_id());
7796            assert_eq!(4, active_pane.read(cx).items_len());
7797            let item_ids_in_pane =
7798                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
7799            assert!(item_ids_in_pane.contains(&center_item.item_id()));
7800            assert!(item_ids_in_pane.contains(&right_item.item_id()));
7801            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
7802            assert!(item_ids_in_pane.contains(&left_item.item_id()));
7803
7804            // Join into next from left pane into top
7805            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
7806        });
7807
7808        workspace.update_in(cx, |workspace, window, cx| {
7809            let active_pane = workspace.active_pane();
7810            assert_eq!(top_pane_id, active_pane.entity_id());
7811            assert_eq!(5, active_pane.read(cx).items_len());
7812            let item_ids_in_pane =
7813                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
7814            assert!(item_ids_in_pane.contains(&center_item.item_id()));
7815            assert!(item_ids_in_pane.contains(&right_item.item_id()));
7816            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
7817            assert!(item_ids_in_pane.contains(&left_item.item_id()));
7818            assert!(item_ids_in_pane.contains(&top_item.item_id()));
7819
7820            // Single pane left: no-op
7821            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
7822        });
7823
7824        workspace.update(cx, |workspace, _cx| {
7825            let active_pane = workspace.active_pane();
7826            assert_eq!(top_pane_id, active_pane.entity_id());
7827        });
7828    }
7829
7830    fn add_an_item_to_active_pane(
7831        cx: &mut VisualTestContext,
7832        workspace: &Entity<Workspace>,
7833        item_id: u64,
7834    ) -> Entity<TestItem> {
7835        let item = cx.new(|cx| {
7836            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
7837                item_id,
7838                "item{item_id}.txt",
7839                cx,
7840            )])
7841        });
7842        workspace.update_in(cx, |workspace, window, cx| {
7843            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
7844        });
7845        return item;
7846    }
7847
7848    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
7849        return workspace.update_in(cx, |workspace, window, cx| {
7850            let new_pane = workspace.split_pane(
7851                workspace.active_pane().clone(),
7852                SplitDirection::Right,
7853                window,
7854                cx,
7855            );
7856            new_pane
7857        });
7858    }
7859
7860    #[gpui::test]
7861    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
7862        init_test(cx);
7863        let fs = FakeFs::new(cx.executor());
7864        let project = Project::test(fs, None, cx).await;
7865        let (workspace, cx) =
7866            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
7867
7868        add_an_item_to_active_pane(cx, &workspace, 1);
7869        split_pane(cx, &workspace);
7870        add_an_item_to_active_pane(cx, &workspace, 2);
7871        split_pane(cx, &workspace); // empty pane
7872        split_pane(cx, &workspace);
7873        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
7874
7875        cx.executor().run_until_parked();
7876
7877        workspace.update(cx, |workspace, cx| {
7878            let num_panes = workspace.panes().len();
7879            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
7880            let active_item = workspace
7881                .active_pane()
7882                .read(cx)
7883                .active_item()
7884                .expect("item is in focus");
7885
7886            assert_eq!(num_panes, 4);
7887            assert_eq!(num_items_in_current_pane, 1);
7888            assert_eq!(active_item.item_id(), last_item.item_id());
7889        });
7890
7891        workspace.update_in(cx, |workspace, window, cx| {
7892            workspace.join_all_panes(window, cx);
7893        });
7894
7895        workspace.update(cx, |workspace, cx| {
7896            let num_panes = workspace.panes().len();
7897            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
7898            let active_item = workspace
7899                .active_pane()
7900                .read(cx)
7901                .active_item()
7902                .expect("item is in focus");
7903
7904            assert_eq!(num_panes, 1);
7905            assert_eq!(num_items_in_current_pane, 3);
7906            assert_eq!(active_item.item_id(), last_item.item_id());
7907        });
7908    }
7909    struct TestModal(FocusHandle);
7910
7911    impl TestModal {
7912        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
7913            Self(cx.focus_handle())
7914        }
7915    }
7916
7917    impl EventEmitter<DismissEvent> for TestModal {}
7918
7919    impl Focusable for TestModal {
7920        fn focus_handle(&self, _cx: &App) -> FocusHandle {
7921            self.0.clone()
7922        }
7923    }
7924
7925    impl ModalView for TestModal {}
7926
7927    impl Render for TestModal {
7928        fn render(
7929            &mut self,
7930            _window: &mut Window,
7931            _cx: &mut Context<TestModal>,
7932        ) -> impl IntoElement {
7933            div().track_focus(&self.0)
7934        }
7935    }
7936
7937    #[gpui::test]
7938    async fn test_panels(cx: &mut gpui::TestAppContext) {
7939        init_test(cx);
7940        let fs = FakeFs::new(cx.executor());
7941
7942        let project = Project::test(fs, [], cx).await;
7943        let (workspace, cx) =
7944            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
7945
7946        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
7947            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
7948            workspace.add_panel(panel_1.clone(), window, cx);
7949            workspace.toggle_dock(DockPosition::Left, window, cx);
7950            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
7951            workspace.add_panel(panel_2.clone(), window, cx);
7952            workspace.toggle_dock(DockPosition::Right, window, cx);
7953
7954            let left_dock = workspace.left_dock();
7955            assert_eq!(
7956                left_dock.read(cx).visible_panel().unwrap().panel_id(),
7957                panel_1.panel_id()
7958            );
7959            assert_eq!(
7960                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
7961                panel_1.size(window, cx)
7962            );
7963
7964            left_dock.update(cx, |left_dock, cx| {
7965                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
7966            });
7967            assert_eq!(
7968                workspace
7969                    .right_dock()
7970                    .read(cx)
7971                    .visible_panel()
7972                    .unwrap()
7973                    .panel_id(),
7974                panel_2.panel_id(),
7975            );
7976
7977            (panel_1, panel_2)
7978        });
7979
7980        // Move panel_1 to the right
7981        panel_1.update_in(cx, |panel_1, window, cx| {
7982            panel_1.set_position(DockPosition::Right, window, cx)
7983        });
7984
7985        workspace.update_in(cx, |workspace, window, cx| {
7986            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
7987            // Since it was the only panel on the left, the left dock should now be closed.
7988            assert!(!workspace.left_dock().read(cx).is_open());
7989            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
7990            let right_dock = workspace.right_dock();
7991            assert_eq!(
7992                right_dock.read(cx).visible_panel().unwrap().panel_id(),
7993                panel_1.panel_id()
7994            );
7995            assert_eq!(
7996                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
7997                px(1337.)
7998            );
7999
8000            // Now we move panel_2 to the left
8001            panel_2.set_position(DockPosition::Left, window, cx);
8002        });
8003
8004        workspace.update(cx, |workspace, cx| {
8005            // Since panel_2 was not visible on the right, we don't open the left dock.
8006            assert!(!workspace.left_dock().read(cx).is_open());
8007            // And the right dock is unaffected in its displaying of panel_1
8008            assert!(workspace.right_dock().read(cx).is_open());
8009            assert_eq!(
8010                workspace
8011                    .right_dock()
8012                    .read(cx)
8013                    .visible_panel()
8014                    .unwrap()
8015                    .panel_id(),
8016                panel_1.panel_id(),
8017            );
8018        });
8019
8020        // Move panel_1 back to the left
8021        panel_1.update_in(cx, |panel_1, window, cx| {
8022            panel_1.set_position(DockPosition::Left, window, cx)
8023        });
8024
8025        workspace.update_in(cx, |workspace, window, cx| {
8026            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
8027            let left_dock = workspace.left_dock();
8028            assert!(left_dock.read(cx).is_open());
8029            assert_eq!(
8030                left_dock.read(cx).visible_panel().unwrap().panel_id(),
8031                panel_1.panel_id()
8032            );
8033            assert_eq!(
8034                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
8035                px(1337.)
8036            );
8037            // And the right dock should be closed as it no longer has any panels.
8038            assert!(!workspace.right_dock().read(cx).is_open());
8039
8040            // Now we move panel_1 to the bottom
8041            panel_1.set_position(DockPosition::Bottom, window, cx);
8042        });
8043
8044        workspace.update_in(cx, |workspace, window, cx| {
8045            // Since panel_1 was visible on the left, we close the left dock.
8046            assert!(!workspace.left_dock().read(cx).is_open());
8047            // The bottom dock is sized based on the panel's default size,
8048            // since the panel orientation changed from vertical to horizontal.
8049            let bottom_dock = workspace.bottom_dock();
8050            assert_eq!(
8051                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
8052                panel_1.size(window, cx),
8053            );
8054            // Close bottom dock and move panel_1 back to the left.
8055            bottom_dock.update(cx, |bottom_dock, cx| {
8056                bottom_dock.set_open(false, window, cx)
8057            });
8058            panel_1.set_position(DockPosition::Left, window, cx);
8059        });
8060
8061        // Emit activated event on panel 1
8062        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
8063
8064        // Now the left dock is open and panel_1 is active and focused.
8065        workspace.update_in(cx, |workspace, window, cx| {
8066            let left_dock = workspace.left_dock();
8067            assert!(left_dock.read(cx).is_open());
8068            assert_eq!(
8069                left_dock.read(cx).visible_panel().unwrap().panel_id(),
8070                panel_1.panel_id(),
8071            );
8072            assert!(panel_1.focus_handle(cx).is_focused(window));
8073        });
8074
8075        // Emit closed event on panel 2, which is not active
8076        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
8077
8078        // Wo don't close the left dock, because panel_2 wasn't the active panel
8079        workspace.update(cx, |workspace, cx| {
8080            let left_dock = workspace.left_dock();
8081            assert!(left_dock.read(cx).is_open());
8082            assert_eq!(
8083                left_dock.read(cx).visible_panel().unwrap().panel_id(),
8084                panel_1.panel_id(),
8085            );
8086        });
8087
8088        // Emitting a ZoomIn event shows the panel as zoomed.
8089        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
8090        workspace.update(cx, |workspace, _| {
8091            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
8092            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
8093        });
8094
8095        // Move panel to another dock while it is zoomed
8096        panel_1.update_in(cx, |panel, window, cx| {
8097            panel.set_position(DockPosition::Right, window, cx)
8098        });
8099        workspace.update(cx, |workspace, _| {
8100            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
8101
8102            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
8103        });
8104
8105        // This is a helper for getting a:
8106        // - valid focus on an element,
8107        // - that isn't a part of the panes and panels system of the Workspace,
8108        // - and doesn't trigger the 'on_focus_lost' API.
8109        let focus_other_view = {
8110            let workspace = workspace.clone();
8111            move |cx: &mut VisualTestContext| {
8112                workspace.update_in(cx, |workspace, window, cx| {
8113                    if let Some(_) = workspace.active_modal::<TestModal>(cx) {
8114                        workspace.toggle_modal(window, cx, TestModal::new);
8115                        workspace.toggle_modal(window, cx, TestModal::new);
8116                    } else {
8117                        workspace.toggle_modal(window, cx, TestModal::new);
8118                    }
8119                })
8120            }
8121        };
8122
8123        // If focus is transferred to another view that's not a panel or another pane, we still show
8124        // the panel as zoomed.
8125        focus_other_view(cx);
8126        workspace.update(cx, |workspace, _| {
8127            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
8128            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
8129        });
8130
8131        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
8132        workspace.update_in(cx, |_workspace, window, cx| {
8133            cx.focus_self(window);
8134        });
8135        workspace.update(cx, |workspace, _| {
8136            assert_eq!(workspace.zoomed, None);
8137            assert_eq!(workspace.zoomed_position, None);
8138        });
8139
8140        // If focus is transferred again to another view that's not a panel or a pane, we won't
8141        // show the panel as zoomed because it wasn't zoomed before.
8142        focus_other_view(cx);
8143        workspace.update(cx, |workspace, _| {
8144            assert_eq!(workspace.zoomed, None);
8145            assert_eq!(workspace.zoomed_position, None);
8146        });
8147
8148        // When the panel is activated, it is zoomed again.
8149        cx.dispatch_action(ToggleRightDock);
8150        workspace.update(cx, |workspace, _| {
8151            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
8152            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
8153        });
8154
8155        // Emitting a ZoomOut event unzooms the panel.
8156        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
8157        workspace.update(cx, |workspace, _| {
8158            assert_eq!(workspace.zoomed, None);
8159            assert_eq!(workspace.zoomed_position, None);
8160        });
8161
8162        // Emit closed event on panel 1, which is active
8163        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
8164
8165        // Now the left dock is closed, because panel_1 was the active panel
8166        workspace.update(cx, |workspace, cx| {
8167            let right_dock = workspace.right_dock();
8168            assert!(!right_dock.read(cx).is_open());
8169        });
8170    }
8171
8172    #[gpui::test]
8173    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
8174        init_test(cx);
8175
8176        let fs = FakeFs::new(cx.background_executor.clone());
8177        let project = Project::test(fs, [], cx).await;
8178        let (workspace, cx) =
8179            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
8180        let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
8181
8182        let dirty_regular_buffer = cx.new(|cx| {
8183            TestItem::new(cx)
8184                .with_dirty(true)
8185                .with_label("1.txt")
8186                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
8187        });
8188        let dirty_regular_buffer_2 = cx.new(|cx| {
8189            TestItem::new(cx)
8190                .with_dirty(true)
8191                .with_label("2.txt")
8192                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
8193        });
8194        let dirty_multi_buffer_with_both = cx.new(|cx| {
8195            TestItem::new(cx)
8196                .with_dirty(true)
8197                .with_singleton(false)
8198                .with_label("Fake Project Search")
8199                .with_project_items(&[
8200                    dirty_regular_buffer.read(cx).project_items[0].clone(),
8201                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
8202                ])
8203        });
8204        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
8205        workspace.update_in(cx, |workspace, window, cx| {
8206            workspace.add_item(
8207                pane.clone(),
8208                Box::new(dirty_regular_buffer.clone()),
8209                None,
8210                false,
8211                false,
8212                window,
8213                cx,
8214            );
8215            workspace.add_item(
8216                pane.clone(),
8217                Box::new(dirty_regular_buffer_2.clone()),
8218                None,
8219                false,
8220                false,
8221                window,
8222                cx,
8223            );
8224            workspace.add_item(
8225                pane.clone(),
8226                Box::new(dirty_multi_buffer_with_both.clone()),
8227                None,
8228                false,
8229                false,
8230                window,
8231                cx,
8232            );
8233        });
8234
8235        pane.update_in(cx, |pane, window, cx| {
8236            pane.activate_item(2, true, true, window, cx);
8237            assert_eq!(
8238                pane.active_item().unwrap().item_id(),
8239                multi_buffer_with_both_files_id,
8240                "Should select the multi buffer in the pane"
8241            );
8242        });
8243        let close_all_but_multi_buffer_task = pane
8244            .update_in(cx, |pane, window, cx| {
8245                pane.close_inactive_items(
8246                    &CloseInactiveItems {
8247                        save_intent: Some(SaveIntent::Save),
8248                        close_pinned: true,
8249                    },
8250                    window,
8251                    cx,
8252                )
8253            })
8254            .expect("should have inactive files to close");
8255        cx.background_executor.run_until_parked();
8256        assert!(!cx.has_pending_prompt());
8257        close_all_but_multi_buffer_task
8258            .await
8259            .expect("Closing all buffers but the multi buffer failed");
8260        pane.update(cx, |pane, cx| {
8261            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
8262            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
8263            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
8264            assert_eq!(pane.items_len(), 1);
8265            assert_eq!(
8266                pane.active_item().unwrap().item_id(),
8267                multi_buffer_with_both_files_id,
8268                "Should have only the multi buffer left in the pane"
8269            );
8270            assert!(
8271                dirty_multi_buffer_with_both.read(cx).is_dirty,
8272                "The multi buffer containing the unsaved buffer should still be dirty"
8273            );
8274        });
8275
8276        dirty_regular_buffer.update(cx, |buffer, cx| {
8277            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
8278        });
8279
8280        let close_multi_buffer_task = pane
8281            .update_in(cx, |pane, window, cx| {
8282                pane.close_active_item(
8283                    &CloseActiveItem {
8284                        save_intent: Some(SaveIntent::Close),
8285                        close_pinned: false,
8286                    },
8287                    window,
8288                    cx,
8289                )
8290            })
8291            .expect("should have the multi buffer to close");
8292        cx.background_executor.run_until_parked();
8293        assert!(
8294            cx.has_pending_prompt(),
8295            "Dirty multi buffer should prompt a save dialog"
8296        );
8297        cx.simulate_prompt_answer("Save");
8298        cx.background_executor.run_until_parked();
8299        close_multi_buffer_task
8300            .await
8301            .expect("Closing the multi buffer failed");
8302        pane.update(cx, |pane, cx| {
8303            assert_eq!(
8304                dirty_multi_buffer_with_both.read(cx).save_count,
8305                1,
8306                "Multi buffer item should get be saved"
8307            );
8308            // Test impl does not save inner items, so we do not assert them
8309            assert_eq!(
8310                pane.items_len(),
8311                0,
8312                "No more items should be left in the pane"
8313            );
8314            assert!(pane.active_item().is_none());
8315        });
8316    }
8317
8318    #[gpui::test]
8319    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
8320        cx: &mut TestAppContext,
8321    ) {
8322        init_test(cx);
8323
8324        let fs = FakeFs::new(cx.background_executor.clone());
8325        let project = Project::test(fs, [], cx).await;
8326        let (workspace, cx) =
8327            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
8328        let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
8329
8330        let dirty_regular_buffer = cx.new(|cx| {
8331            TestItem::new(cx)
8332                .with_dirty(true)
8333                .with_label("1.txt")
8334                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
8335        });
8336        let dirty_regular_buffer_2 = cx.new(|cx| {
8337            TestItem::new(cx)
8338                .with_dirty(true)
8339                .with_label("2.txt")
8340                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
8341        });
8342        let clear_regular_buffer = cx.new(|cx| {
8343            TestItem::new(cx)
8344                .with_label("3.txt")
8345                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
8346        });
8347
8348        let dirty_multi_buffer_with_both = cx.new(|cx| {
8349            TestItem::new(cx)
8350                .with_dirty(true)
8351                .with_singleton(false)
8352                .with_label("Fake Project Search")
8353                .with_project_items(&[
8354                    dirty_regular_buffer.read(cx).project_items[0].clone(),
8355                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
8356                    clear_regular_buffer.read(cx).project_items[0].clone(),
8357                ])
8358        });
8359        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
8360        workspace.update_in(cx, |workspace, window, cx| {
8361            workspace.add_item(
8362                pane.clone(),
8363                Box::new(dirty_regular_buffer.clone()),
8364                None,
8365                false,
8366                false,
8367                window,
8368                cx,
8369            );
8370            workspace.add_item(
8371                pane.clone(),
8372                Box::new(dirty_multi_buffer_with_both.clone()),
8373                None,
8374                false,
8375                false,
8376                window,
8377                cx,
8378            );
8379        });
8380
8381        pane.update_in(cx, |pane, window, cx| {
8382            pane.activate_item(1, true, true, window, cx);
8383            assert_eq!(
8384                pane.active_item().unwrap().item_id(),
8385                multi_buffer_with_both_files_id,
8386                "Should select the multi buffer in the pane"
8387            );
8388        });
8389        let _close_multi_buffer_task = pane
8390            .update_in(cx, |pane, window, cx| {
8391                pane.close_active_item(
8392                    &CloseActiveItem {
8393                        save_intent: None,
8394                        close_pinned: false,
8395                    },
8396                    window,
8397                    cx,
8398                )
8399            })
8400            .expect("should have active multi buffer to close");
8401        cx.background_executor.run_until_parked();
8402        assert!(
8403            cx.has_pending_prompt(),
8404            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
8405        );
8406    }
8407
8408    #[gpui::test]
8409    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
8410        cx: &mut TestAppContext,
8411    ) {
8412        init_test(cx);
8413
8414        let fs = FakeFs::new(cx.background_executor.clone());
8415        let project = Project::test(fs, [], cx).await;
8416        let (workspace, cx) =
8417            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
8418        let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
8419
8420        let dirty_regular_buffer = cx.new(|cx| {
8421            TestItem::new(cx)
8422                .with_dirty(true)
8423                .with_label("1.txt")
8424                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
8425        });
8426        let dirty_regular_buffer_2 = cx.new(|cx| {
8427            TestItem::new(cx)
8428                .with_dirty(true)
8429                .with_label("2.txt")
8430                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
8431        });
8432        let clear_regular_buffer = cx.new(|cx| {
8433            TestItem::new(cx)
8434                .with_label("3.txt")
8435                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
8436        });
8437
8438        let dirty_multi_buffer = cx.new(|cx| {
8439            TestItem::new(cx)
8440                .with_dirty(true)
8441                .with_singleton(false)
8442                .with_label("Fake Project Search")
8443                .with_project_items(&[
8444                    dirty_regular_buffer.read(cx).project_items[0].clone(),
8445                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
8446                    clear_regular_buffer.read(cx).project_items[0].clone(),
8447                ])
8448        });
8449        workspace.update_in(cx, |workspace, window, cx| {
8450            workspace.add_item(
8451                pane.clone(),
8452                Box::new(dirty_regular_buffer.clone()),
8453                None,
8454                false,
8455                false,
8456                window,
8457                cx,
8458            );
8459            workspace.add_item(
8460                pane.clone(),
8461                Box::new(dirty_regular_buffer_2.clone()),
8462                None,
8463                false,
8464                false,
8465                window,
8466                cx,
8467            );
8468            workspace.add_item(
8469                pane.clone(),
8470                Box::new(dirty_multi_buffer.clone()),
8471                None,
8472                false,
8473                false,
8474                window,
8475                cx,
8476            );
8477        });
8478
8479        pane.update_in(cx, |pane, window, cx| {
8480            pane.activate_item(2, true, true, window, cx);
8481            assert_eq!(
8482                pane.active_item().unwrap().item_id(),
8483                dirty_multi_buffer.item_id(),
8484                "Should select the multi buffer in the pane"
8485            );
8486        });
8487        let close_multi_buffer_task = pane
8488            .update_in(cx, |pane, window, cx| {
8489                pane.close_active_item(
8490                    &CloseActiveItem {
8491                        save_intent: None,
8492                        close_pinned: false,
8493                    },
8494                    window,
8495                    cx,
8496                )
8497            })
8498            .expect("should have active multi buffer to close");
8499        cx.background_executor.run_until_parked();
8500        assert!(
8501            !cx.has_pending_prompt(),
8502            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
8503        );
8504        close_multi_buffer_task
8505            .await
8506            .expect("Closing multi buffer failed");
8507        pane.update(cx, |pane, cx| {
8508            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
8509            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
8510            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
8511            assert_eq!(
8512                pane.items()
8513                    .map(|item| item.item_id())
8514                    .sorted()
8515                    .collect::<Vec<_>>(),
8516                vec![
8517                    dirty_regular_buffer.item_id(),
8518                    dirty_regular_buffer_2.item_id(),
8519                ],
8520                "Should have no multi buffer left in the pane"
8521            );
8522            assert!(dirty_regular_buffer.read(cx).is_dirty);
8523            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
8524        });
8525    }
8526
8527    #[gpui::test]
8528    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
8529        init_test(cx);
8530        let fs = FakeFs::new(cx.executor());
8531        let project = Project::test(fs, [], cx).await;
8532        let (workspace, cx) =
8533            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
8534
8535        // Add a new panel to the right dock, opening the dock and setting the
8536        // focus to the new panel.
8537        let panel = workspace.update_in(cx, |workspace, window, cx| {
8538            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
8539            workspace.add_panel(panel.clone(), window, cx);
8540
8541            workspace
8542                .right_dock()
8543                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
8544
8545            workspace.toggle_panel_focus::<TestPanel>(window, cx);
8546
8547            panel
8548        });
8549
8550        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
8551        // panel to the next valid position which, in this case, is the left
8552        // dock.
8553        cx.dispatch_action(MoveFocusedPanelToNextPosition);
8554        workspace.update(cx, |workspace, cx| {
8555            assert!(workspace.left_dock().read(cx).is_open());
8556            assert_eq!(panel.read(cx).position, DockPosition::Left);
8557        });
8558
8559        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
8560        // panel to the next valid position which, in this case, is the bottom
8561        // dock.
8562        cx.dispatch_action(MoveFocusedPanelToNextPosition);
8563        workspace.update(cx, |workspace, cx| {
8564            assert!(workspace.bottom_dock().read(cx).is_open());
8565            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
8566        });
8567
8568        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
8569        // around moving the panel to its initial position, the right dock.
8570        cx.dispatch_action(MoveFocusedPanelToNextPosition);
8571        workspace.update(cx, |workspace, cx| {
8572            assert!(workspace.right_dock().read(cx).is_open());
8573            assert_eq!(panel.read(cx).position, DockPosition::Right);
8574        });
8575
8576        // Remove focus from the panel, ensuring that, if the panel is not
8577        // focused, the `MoveFocusedPanelToNextPosition` action does not update
8578        // the panel's position, so the panel is still in the right dock.
8579        workspace.update_in(cx, |workspace, window, cx| {
8580            workspace.toggle_panel_focus::<TestPanel>(window, cx);
8581        });
8582
8583        cx.dispatch_action(MoveFocusedPanelToNextPosition);
8584        workspace.update(cx, |workspace, cx| {
8585            assert!(workspace.right_dock().read(cx).is_open());
8586            assert_eq!(panel.read(cx).position, DockPosition::Right);
8587        });
8588    }
8589
8590    mod register_project_item_tests {
8591
8592        use super::*;
8593
8594        // View
8595        struct TestPngItemView {
8596            focus_handle: FocusHandle,
8597        }
8598        // Model
8599        struct TestPngItem {}
8600
8601        impl project::ProjectItem for TestPngItem {
8602            fn try_open(
8603                _project: &Entity<Project>,
8604                path: &ProjectPath,
8605                cx: &mut App,
8606            ) -> Option<Task<gpui::Result<Entity<Self>>>> {
8607                if path.path.extension().unwrap() == "png" {
8608                    Some(cx.spawn(|mut cx| async move { cx.new(|_| TestPngItem {}) }))
8609                } else {
8610                    None
8611                }
8612            }
8613
8614            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
8615                None
8616            }
8617
8618            fn project_path(&self, _: &App) -> Option<ProjectPath> {
8619                None
8620            }
8621
8622            fn is_dirty(&self) -> bool {
8623                false
8624            }
8625        }
8626
8627        impl Item for TestPngItemView {
8628            type Event = ();
8629        }
8630        impl EventEmitter<()> for TestPngItemView {}
8631        impl Focusable for TestPngItemView {
8632            fn focus_handle(&self, _cx: &App) -> FocusHandle {
8633                self.focus_handle.clone()
8634            }
8635        }
8636
8637        impl Render for TestPngItemView {
8638            fn render(
8639                &mut self,
8640                _window: &mut Window,
8641                _cx: &mut Context<Self>,
8642            ) -> impl IntoElement {
8643                Empty
8644            }
8645        }
8646
8647        impl ProjectItem for TestPngItemView {
8648            type Item = TestPngItem;
8649
8650            fn for_project_item(
8651                _project: Entity<Project>,
8652                _item: Entity<Self::Item>,
8653                _: &mut Window,
8654                cx: &mut Context<Self>,
8655            ) -> Self
8656            where
8657                Self: Sized,
8658            {
8659                Self {
8660                    focus_handle: cx.focus_handle(),
8661                }
8662            }
8663        }
8664
8665        // View
8666        struct TestIpynbItemView {
8667            focus_handle: FocusHandle,
8668        }
8669        // Model
8670        struct TestIpynbItem {}
8671
8672        impl project::ProjectItem for TestIpynbItem {
8673            fn try_open(
8674                _project: &Entity<Project>,
8675                path: &ProjectPath,
8676                cx: &mut App,
8677            ) -> Option<Task<gpui::Result<Entity<Self>>>> {
8678                if path.path.extension().unwrap() == "ipynb" {
8679                    Some(cx.spawn(|mut cx| async move { cx.new(|_| TestIpynbItem {}) }))
8680                } else {
8681                    None
8682                }
8683            }
8684
8685            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
8686                None
8687            }
8688
8689            fn project_path(&self, _: &App) -> Option<ProjectPath> {
8690                None
8691            }
8692
8693            fn is_dirty(&self) -> bool {
8694                false
8695            }
8696        }
8697
8698        impl Item for TestIpynbItemView {
8699            type Event = ();
8700        }
8701        impl EventEmitter<()> for TestIpynbItemView {}
8702        impl Focusable for TestIpynbItemView {
8703            fn focus_handle(&self, _cx: &App) -> FocusHandle {
8704                self.focus_handle.clone()
8705            }
8706        }
8707
8708        impl Render for TestIpynbItemView {
8709            fn render(
8710                &mut self,
8711                _window: &mut Window,
8712                _cx: &mut Context<Self>,
8713            ) -> impl IntoElement {
8714                Empty
8715            }
8716        }
8717
8718        impl ProjectItem for TestIpynbItemView {
8719            type Item = TestIpynbItem;
8720
8721            fn for_project_item(
8722                _project: Entity<Project>,
8723                _item: Entity<Self::Item>,
8724                _: &mut Window,
8725                cx: &mut Context<Self>,
8726            ) -> Self
8727            where
8728                Self: Sized,
8729            {
8730                Self {
8731                    focus_handle: cx.focus_handle(),
8732                }
8733            }
8734        }
8735
8736        struct TestAlternatePngItemView {
8737            focus_handle: FocusHandle,
8738        }
8739
8740        impl Item for TestAlternatePngItemView {
8741            type Event = ();
8742        }
8743
8744        impl EventEmitter<()> for TestAlternatePngItemView {}
8745        impl Focusable for TestAlternatePngItemView {
8746            fn focus_handle(&self, _cx: &App) -> FocusHandle {
8747                self.focus_handle.clone()
8748            }
8749        }
8750
8751        impl Render for TestAlternatePngItemView {
8752            fn render(
8753                &mut self,
8754                _window: &mut Window,
8755                _cx: &mut Context<Self>,
8756            ) -> impl IntoElement {
8757                Empty
8758            }
8759        }
8760
8761        impl ProjectItem for TestAlternatePngItemView {
8762            type Item = TestPngItem;
8763
8764            fn for_project_item(
8765                _project: Entity<Project>,
8766                _item: Entity<Self::Item>,
8767                _: &mut Window,
8768                cx: &mut Context<Self>,
8769            ) -> Self
8770            where
8771                Self: Sized,
8772            {
8773                Self {
8774                    focus_handle: cx.focus_handle(),
8775                }
8776            }
8777        }
8778
8779        #[gpui::test]
8780        async fn test_register_project_item(cx: &mut TestAppContext) {
8781            init_test(cx);
8782
8783            cx.update(|cx| {
8784                register_project_item::<TestPngItemView>(cx);
8785                register_project_item::<TestIpynbItemView>(cx);
8786            });
8787
8788            let fs = FakeFs::new(cx.executor());
8789            fs.insert_tree(
8790                "/root1",
8791                json!({
8792                    "one.png": "BINARYDATAHERE",
8793                    "two.ipynb": "{ totally a notebook }",
8794                    "three.txt": "editing text, sure why not?"
8795                }),
8796            )
8797            .await;
8798
8799            let project = Project::test(fs, ["root1".as_ref()], cx).await;
8800            let (workspace, cx) =
8801                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
8802
8803            let worktree_id = project.update(cx, |project, cx| {
8804                project.worktrees(cx).next().unwrap().read(cx).id()
8805            });
8806
8807            let handle = workspace
8808                .update_in(cx, |workspace, window, cx| {
8809                    let project_path = (worktree_id, "one.png");
8810                    workspace.open_path(project_path, None, true, window, cx)
8811                })
8812                .await
8813                .unwrap();
8814
8815            // Now we can check if the handle we got back errored or not
8816            assert_eq!(
8817                handle.to_any().entity_type(),
8818                TypeId::of::<TestPngItemView>()
8819            );
8820
8821            let handle = workspace
8822                .update_in(cx, |workspace, window, cx| {
8823                    let project_path = (worktree_id, "two.ipynb");
8824                    workspace.open_path(project_path, None, true, window, cx)
8825                })
8826                .await
8827                .unwrap();
8828
8829            assert_eq!(
8830                handle.to_any().entity_type(),
8831                TypeId::of::<TestIpynbItemView>()
8832            );
8833
8834            let handle = workspace
8835                .update_in(cx, |workspace, window, cx| {
8836                    let project_path = (worktree_id, "three.txt");
8837                    workspace.open_path(project_path, None, true, window, cx)
8838                })
8839                .await;
8840            assert!(handle.is_err());
8841        }
8842
8843        #[gpui::test]
8844        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
8845            init_test(cx);
8846
8847            cx.update(|cx| {
8848                register_project_item::<TestPngItemView>(cx);
8849                register_project_item::<TestAlternatePngItemView>(cx);
8850            });
8851
8852            let fs = FakeFs::new(cx.executor());
8853            fs.insert_tree(
8854                "/root1",
8855                json!({
8856                    "one.png": "BINARYDATAHERE",
8857                    "two.ipynb": "{ totally a notebook }",
8858                    "three.txt": "editing text, sure why not?"
8859                }),
8860            )
8861            .await;
8862            let project = Project::test(fs, ["root1".as_ref()], cx).await;
8863            let (workspace, cx) =
8864                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
8865            let worktree_id = project.update(cx, |project, cx| {
8866                project.worktrees(cx).next().unwrap().read(cx).id()
8867            });
8868
8869            let handle = workspace
8870                .update_in(cx, |workspace, window, cx| {
8871                    let project_path = (worktree_id, "one.png");
8872                    workspace.open_path(project_path, None, true, window, cx)
8873                })
8874                .await
8875                .unwrap();
8876
8877            // This _must_ be the second item registered
8878            assert_eq!(
8879                handle.to_any().entity_type(),
8880                TypeId::of::<TestAlternatePngItemView>()
8881            );
8882
8883            let handle = workspace
8884                .update_in(cx, |workspace, window, cx| {
8885                    let project_path = (worktree_id, "three.txt");
8886                    workspace.open_path(project_path, None, true, window, cx)
8887                })
8888                .await;
8889            assert!(handle.is_err());
8890        }
8891    }
8892
8893    pub fn init_test(cx: &mut TestAppContext) {
8894        cx.update(|cx| {
8895            let settings_store = SettingsStore::test(cx);
8896            cx.set_global(settings_store);
8897            theme::init(theme::LoadThemes::JustBase, cx);
8898            language::init(cx);
8899            crate::init_settings(cx);
8900            Project::init_settings(cx);
8901        });
8902    }
8903
8904    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
8905        let item = TestProjectItem::new(id, path, cx);
8906        item.update(cx, |item, _| {
8907            item.is_dirty = true;
8908        });
8909        item
8910    }
8911}